Nostr notes by Corey S Powell

This story is amazing. Giant octopuses of the Cretaceous were up ...

2026-04-23T20:32:10Z

This story is amazing.

Giant octopuses of the Cretaceous were up to 19 meters (60 feet) long.

They were the apex ocean predators of their day, eating up plesiosaurs and mosasaurs.

And they were apparently quite intelligent.

Sorry we missed you!

https://www.science.org/doi/10.1126/science.aea6285 #science #nature #history

A new study confirms the "Hubble tension": measurements ...

2026-04-11T18:00:31Z

A new study confirms the "Hubble tension": measurements of the local expansion of the universe do not line up with measurements of how the universe was expanding after the Big Bang.

It's no simple experimental error. 11 different techniques agree.

https://noirlab.edu/public/news/noirlab2611/?lang #space #science #science

The Artemis II crew is closing in on the Moon, getting an ...

2026-04-05T16:22:04Z

The Artemis II crew is closing in on the Moon, getting an unearthly view: south at the top, lunar farside on the right.

This is the first time humans have had a complete, direct view of the huge Orientale impact basin, visible at far right.

https://www.flickr.com/photos/nasa2explore/55187348577/ #space #science #artemis #nature

Here is another version of the marvelous new Artemis II view of ...

2026-04-03T18:00:34Z

In reply to nevent1q…4c0p
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Here is another version of the marvelous new Artemis II view of Earth, taken just minutes later.

This shot uses a shorter exposure, emphasizing the night side of our planet as it eclipses the Sun.

To be clear: We're basically looking at an eclipse of the ...

2026-04-03T17:23:54Z

In reply to nevent1q…uj57
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To be clear: We're basically looking at an eclipse of the Sun, by the Earth.

This is the night side of our planet, illuminated by the light of the full Moon, seen in a long exposure. Wow!

What an amazing view of Earth from Artemis II. The Sun is behind ...

2026-04-03T17:22:16Z

What an amazing view of Earth from Artemis II.

The Sun is behind the Earth, illuminating a thin crescent. This low-light shot, taken by Reid Wiseman using a Nikon D5, shows auroras over the poles, city lights, and the glow of the atmosphere.

And yes, there are stars!

https://www.nasa.gov/image-article/hello-world/ #space #science #nature #technology

I keep seeing versions of this post, which imply a bizarre ...

2026-03-22T03:43:28Z

I keep seeing versions of this post, which imply a bizarre misunderstanding of how we know the world.

Do people imagine that if we'd never observed galaxies or neutrinos or exoplanets or the cosmic microwave background, we could have *imagined* these things & that would be just as real?

Or that we've magically reached the point, just now, where we no longer need to observe the world?

#science #nature #technology

This summary of the Starshot project by one of its team leaders ...

2026-03-15T14:26:21Z

In reply to nevent1q…adyz
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This summary of the Starshot project by one of its team leaders is a bit defensive. But it's a fascinating peek into the minds of the engineers who deeply, passionately wanted to be able to send a spacecraft to another star within their lifetime.

https://www.centauri-dreams.org/2026/03/03/starshot-is-a-success-part-i/ #science #astronomy #space #tech

The wild "Starshot" project was conceived to design a ...

2026-03-15T14:25:19Z

The wild "Starshot" project was conceived to design a probe that could reach Proxima Centauri in about 20 years.

Although project has gone dormant, it has yielded a lot of new ideas (many not widely shared, alas) about how to build a viable interstellar probe.

https://www.centauri-dreams.org/2026/03/10/starshot-is-a-success-part-ii/ #space #science #technology

One of the largest structures in the known cosmos is hidden ...

2026-03-12T04:41:32Z

One of the largest structures in the known cosmos is hidden behind gas & dust in our galaxy.

A new study pierces the gloom & reveals the true extent of the Vela Supercluster: over 300 million light years wide, more than 100,000x as massive as the Milky Way.

https://www.sarao.ac.za/news/vela-the-true-scale-of-a-hidden-giant-structure-revealed/ #space #science #nature #technology

WOH G64 is an enormous star, 2000 times the diameter of the Sun. ...

2026-03-10T13:39:35Z

In reply to nevent1q…e033
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WOH G64 is an enormous star, 2000 times the diameter of the Sun. If you put it in the Solar System, it would extend out to the orbit of Saturn!

It's so big that we can take a direct picture of it, even though it lies outside our own galaxy. The illustration offers a closer look at what's going on here.

https://www.eso.org/public/news/eso2417/ #science #nature #astronomy

Astronomers watched as the star WOH G64 transformed from a red ...

2026-03-10T13:36:52Z

Astronomers watched as the star WOH G64 transformed from a red supergiant into a rare, shortlived yellow supergiant star...in just 12 years.

It's a dramatic, rapid instability in a star that is rapidly headed toward a cataclysmic supernova explosion.

https://theconversation.com/one-of-the-biggest-stars-in-the-universe-might-be-getting-ready-to-explode-276519 #space #science #nature

First a hydrogen leak. Now a separate helium leak is causing a ...

2026-02-22T12:10:08Z

First a hydrogen leak. Now a separate *helium* leak is causing a delay in NASA's Artemis 2 mission around the Moon.

The giant rocket is rolling off the launch pad, with the flight delayed to April 1 at the earliest.

https://spaceflightnow.com/2026/02/21/nasas-artemis-2-rocket-hit-by-new-problem-expected-to-bump-moonshot-into-early-april/ #space #science #tech

If you want to see some rousing volcanic activity, just check out ...

2026-02-16T02:29:07Z

If you want to see some rousing volcanic activity, just check out the current live feed from Kīlauea. You might want to sit down first.

https://www.youtube.com/watch?v=tk0tfYDxrUA #science #nature #volcano

News from the edge of the visible universe: JWST has confirmed ...

2026-02-06T21:30:31Z

News from the edge of the visible universe:

JWST has confirmed this galaxy, MoM-z14, as the most distant one yet studied. We're seeing it as it was 13.5 billion years ago, 98% of the way back to the beginning of time.

(MoM stands for "miracle or mirage," to give you a sense of where the researchers' heads are at.)

https://science.nasa.gov/missions/webb/nasa-webb-pushes-boundaries-of-observable-universe-closer-to-big-bang/ #space #science #nature

After three decades of searching, astronomers have found more ...

2026-01-30T05:27:04Z

After three decades of searching, astronomers have found more than 6000 planets, but nothing quite like our own.

The new Terra Hunting Experiment in the Canary Islands is designed to find what we're really looking for: an Earth-size planet in an Earth-like orbit around a Sun-like star.

https://www.sciencenews.org/article/earth-analog-terra-hunting-experiment #space #science #nature #tech

It's sad to see the decay of science information online. For ...

2026-01-25T06:26:49Z

In reply to nevent1q…apwp
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It's sad to see the decay of science information online.

For the 30th anniversary, NASA posted hi-res Voyager images and in-depth details.
For the 35th, lo-res images and in-depth details.
For the 40th, a cartoon and a short blurb, along with a dead link.

#tech #history #nasa

40 years ago today, Voyager 2 became the first (and, so far, ...

2026-01-25T06:26:10Z

40 years ago today, Voyager 2 became the first (and, so far, only) spacecraft to visit to Uranus, sending back astonishing images of the planet, its thin rings, and its peculiar set of moons.

https://www.nasa.gov/history/35-years-ago-voyager-2-explores-uranus/ #space #science #nature #history

I also want to express my admiration for the people who devote ...

2026-01-21T03:59:44Z

In reply to nevent1q…76tz
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I also want to express my admiration for the people who devote their lives to discovery, collaboration, & expanding the human imagination. That's not only a noble task, these days it counts as a form of protest against crass power politics.

Full paper at link:
https://iopscience.iop.org/article/10.3847/1538-4357/adf4d5 #space #science #astronomy #politics

The universe is full of natural magnifying glasses--gravitational ...

2026-01-21T03:58:32Z

The universe is full of natural magnifying glasses--gravitational lenses--pointed in random directions. By chance, this one points toward a galaxy cluster forming in the early universe, 11 billion years ago.

It's a rare peek into how the modern cosmos took shape.

https://www.almaobservatory.org/en/press-releases/alma-and-the-nsf-vla-use-a-cosmic-lens-to-reveal-a-hyperactive-cradle-of-a-future-galaxy-cluster/ #space #science #nature

JWST spotted point-like lights at the edge of the visible ...

2026-01-13T00:55:01Z

In reply to nevent1q…2cpg
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JWST spotted point-like lights at the edge of the visible universe. Black holes? Nope. Colliding galaxies? Nope. Something never seen before.

These may be primordial clumps of gas collapsing directly into dense clusters of stars--some of the very first galaxies.

https://arxiv.org/abs/2509.12177 #space #science #nature

See the little dot? New studies of that blue flash from the ...

2026-01-13T00:53:46Z

In reply to nevent1q…puej
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See the little dot? New studies of that blue flash from the distant universe (a "Luminous Fast Blue Optical Transient") indicate it was caused by a black hole swallowing an entire star. For a moment, it blazed as bright as 100 billion Suns.

https://public.nrao.edu/news/radio-telescopes-uncover-invisible-gas-around-record-shattering-cosmic-explosion/ #space #science

A hellish world: Planet TOI-561 b, slightly larger than Earth, ...

2026-01-13T00:52:53Z

In reply to nevent1q…kdr6
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A hellish world: Planet TOI-561 b, slightly larger than Earth, orbits an ancient, sunlike star so closely that a "year" lasts just 11 hours and its surface is lava. Yet somehow it has a thick atmosphere, hinting at how old, battered planets might rejuvenate themselves.

https://eos.org/articles/a-lava-world-unexpectedly-hosts-an-atmosphere #science #nature #astronomy

In happier news, it's been a great week for learning strange ...

2026-01-13T00:51:36Z

In happier news, it's been a great week for learning strange new things about the universe. A few highlights:

The Rubin Observatory opened its eyes & immediately discovered 1900 asteroids, including the fastest-spinning large asteroid (once every 1.88 minutes!).

https://noirlab.edu/public/news/noirlab2601/ #science #nature #space

Astronomers have spotted a supermassive black hole fleeing its ...

2026-01-04T19:44:38Z

Astronomers have spotted a supermassive black hole fleeing its home galaxy at 900+ kilometers per second, heading off alone into intergalactic space.

I feel you, friend.

https://www.sciencealert.com/jwst-confirms-first-runaway-supermassive-black-hole-tearing-through-space #space #science #astronomy

So cool. If you zoom in on the upper right, you see a little ...

2025-12-31T03:39:35Z

So cool. If you zoom in on the upper right, you see a little crescent. That's the Martian moon Phobos.

Zoom in again and you'll see a star next to Phobos. That's Earth! That's home.

Seen from Mars by NASA's Curiosity rover.

https://science.nasa.gov/photojournal/curiosity-views-earth-setting-phobos-rising/ #science #space #astronomy

There will be four eclipses in 2026, including widely visible ...

2025-12-28T16:58:11Z

There will be four eclipses in 2026, including widely visible full & partial lunar eclipses, plus a total solar eclipse in Spain.

For much of North America, the March 3 lunar eclipse happens near moonset, allowing beautiful views like this. (Photo by Fred Espenak)

https://www.eclipsewise.com/ #science #nature #newyear

The visible universe contains about a trillion galaxies, in a ...

2025-12-27T03:46:02Z

The visible universe contains about a trillion galaxies, in a dizzying variety of styles.

The blue scatter at bottom is Leo P, a nearby dwarf galaxy that is just one-millionth the mass of our Milky Way. It's almost pure hydrogen & helium--much like the galaxies of long ago.

https://www.stsci.edu/contents/news-releases/2025/news-2025-401 #space #science #nature

Three ways of looking at the iconic Christmas Tree Cluster, 2700 ...

2025-12-25T19:09:16Z

Three ways of looking at the iconic Christmas Tree Cluster, 2700 light years from Earth.

What the universe looks like depends on how we look at it. These views highlight infrared (left), x-rays (middle), and red emission from hydrogen gas. Beautiful in three different ways. #space #science #art

I could use some light in this darkness right now, so I thought ...

2025-12-15T22:15:24Z

I could use some light in this darkness right now, so I thought I'd share a gorgeous image from JWST.

This cosmic butterfly is a star being born. New planets are forming within the vertical dark line. Galaxies shine through the scene from the far distance.

https://esawebb.org/images/potm2508a/ #space #science #art #nature

Spiral galaxies like our own are rare in the early universe, ...

2025-12-05T00:52:38Z

Spiral galaxies like our own are rare in the early universe, because they require quiet, stable conditions.

But the discovery of "Alaknanda," a tidy spiral from 12.3 billion years ago, shows that there were pockets of calm even in the era of cosmic chaos.

https://www.sciencedaily.com/releases/2025/12/251203004729.htm #science #nature #philosophy

Look at little Mercury transiting in front of the Sun! This scene ...

2025-11-26T15:44:04Z

Look at little Mercury transiting in front of the Sun! This scene wasn't visible from Earth, but NASA's STEREO A spacecraft caught it on April 7.

(The video is greatly sped up; the actual event took several hours.)

https://stereo.gsfc.nasa.gov/ #space #science #nature #nasa

Marvelous new image of interstellar Comet 3I/ATLAS, taken by ...

2025-11-16T21:27:24Z

Marvelous new image of interstellar Comet 3I/ATLAS, taken by photographer Satoru Murata before dawn this morning. *

On the right you can also see galaxy NGC 4691. There should be a lot more pictures coming in soon.

(Yes, this one really is the interstellar comet.)

https://www.facebook.com/groups/227002358661288/permalink/1619658589395651/?mibextid=wwXIfr&rdid=Es101r7n2s2JTsMn #space #science #nature

I find this remarkable: The Dresden Codex, one of the few ...

2025-11-11T01:08:37Z

I find this remarkable:

The Dresden Codex, one of the few surviving Mayan manuscripts, contains tables that give highly accurate timings of solar eclipses over more than 700 years, from 350 CE to the 12 century.

https://www.science.org/doi/10.1126/sciadv.adt9039 #history #science #astronomy

Here's a comparison between the sky that you can see with ...

2025-11-09T20:44:37Z

In reply to nevent1q…ugv0
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Here's a comparison between the sky that you can see with your human eyes & the sky seen through the radio eyes of the Murchison Widefield Array in Western Australia.

https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/galactic-and-extragalactic-allsky-murchison-widefield-array-survey-extended-gleamx-iii-galactic-plane/C95F9B7DC74EC3F9D3DDCD1C43A905BD #space #astronomy #physics #nature

This is what the band of the Milky Way would look like at night ...

2025-11-09T20:42:45Z

This is what the band of the Milky Way would look like at night if your eyes could see radio waves. A hidden beauty.

It's a new image created by the Murchison Widefield Array, which scanned the sky in 20 radio "colors" over frequencies from 72 to 231 megahertz.

https://www.icrar.org/gleam-x-galactic-plane/ #space #science #nature #tech

What a shot of Comet Lemmon! You can almost reach out and touch ...

2025-11-02T06:49:22Z

What a shot of Comet Lemmon! You can almost reach out and touch it.

Photo taken 3 days ago by Debra Ceravolo.

https://app.astrobin.com/u/debraceravolo?i=0614kk#gallery #space #science #art #photography

Finally, there's this iconic image from JWST. Sure, they can ...

2025-10-31T18:00:34Z

In reply to nevent1q…yyer
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Finally, there's this iconic image from JWST. Sure, they can call it the "Pillars of Creation," but this is obviously a giant Monkey's Paw that has already curled two fingers.

https://esawebb.org/images/pillarsofcreation_composite/ #space #science #nature #halloween

A particularly weird one: The Flying Bat Nebula has the Squid ...

2025-10-31T17:59:34Z

In reply to nevent1q…f9nj
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A particularly weird one: The Flying Bat Nebula has the Squid Nebula inside of it.

Is the bat carrying a squid? Did it swallow a squid whole? Somebody needs to work out the mythology here.

https://www.nebulaphotos.com/sharpless/sh2-129/

The Bat Signal Nebula, just released by the European Southern ...

2025-10-31T17:58:34Z

In reply to nevent1q…yrx8
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The Bat Signal Nebula, just released by the European Southern Observatory.

https://www.eso.org/public/news/eso2518/

The Goblin Nebula, imaged by father-son duo of Bill & Chad ...

2025-10-31T17:57:51Z

In reply to nevent1q…3344
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The Goblin Nebula, imaged by father-son duo of Bill & Chad Williams.

https://www.williamsseaandsky.com/?page_id=2324

The Ghost Nebula, haunting the constellation Cassiopeia. ...

2025-10-31T17:57:00Z

In reply to nevent1q…8tfy
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The Ghost Nebula, haunting the constellation Cassiopeia.

https://esahubble.org/news/heic1818/

The Witch Head Nebula, located near the bright star Rigel in ...

2025-10-31T17:56:10Z

In reply to nevent1q…ya4c
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The Witch Head Nebula, located near the bright star Rigel in Orion.

https://www.nasa.gov/image-article/witch-head-nebula/

Astronomers sure do conjure up a lot of spooky images when they ...

2025-10-31T17:55:06Z

Astronomers sure do conjure up a lot of spooky images when they look out into deep space. A short Halloween thread:

Let's start with the Cosmic Bat Nebula (LDN 43).

https://apod.nasa.gov/apod/ap241027.html #space #science #art #halloween

Spectacular time-lapse image of Comet Lemmon (C/2025 A6), taken ...

2025-10-28T22:36:04Z

Spectacular time-lapse image of Comet Lemmon (C/2025 A6), taken by astrophotographer Michael Jäger.

There might have been, um, a few satellites passing by during the long exposure.

https://forum.vdsastro.de/viewtopic.php?t=7600&start=50#p43988 #space #science #astronomy #art

What a strange, beautiful shot of Comet Lemmon, now passing ...

2025-10-28T15:55:55Z

What a strange, beautiful shot of Comet Lemmon, now passing through the northwest sky after sunset.

Here you see 2 comet tails (gas and dust), plus the unrelated zigzag trail of a passing meteor. And, inevitably, a couple satellite trails, too.

http://star.ucl.ac.uk/~apod/apod/ap251027.html #space #science #nature #art

Wild! A meteorite may have struck the windshield of a 737 flying ...

2025-10-19T17:50:39Z

Wild! A meteorite may have struck the windshield of a 737 flying over Colorado, according to early reports.

Whatever the object was, it cut a pilot's arm but did not seriously damage the plane.

https://avbrief.com/united-max-hit-by-falling-object-at-36000-feet/ #science #tech #technology #space

China's Tianwen-2 is on its way to Kamoʻoalewa, an asteroid ...

2025-10-09T19:43:16Z

China's Tianwen-2 is on its way to Kamoʻoalewa, an asteroid that currently doubles as a "quasi-moon" of Earth. The spacecraft will collect samples & bring them back home.

On its outward trajectory, Tianwen-2 looked back and got this lovely view of our planet.

https://english.news.cn/20251001/ef35fcb0ed1649c787045fd51547149b/c.html #space #science #nature

Just amazing: Comet ATLAS formed some 8 billion years ago. It ...

2025-10-08T02:42:17Z

Just amazing: Comet ATLAS formed some 8 billion years ago. It made about 3 dozen circuits around our galaxy. It entered our our solar system & just passed 30 million kilometers from Mars...

...where ESA's ExoMars orbiter captured these images of the interstellar comet!

https://www.esa.int/Science_Exploration/Space_Science/ESA_s_ExoMars_and_Mars_Express_observe_comet_3I_ATLAS #space #science #astronomy

This year's Nobel Prize in physics recognizes the discovery ...

2025-10-07T11:48:03Z

This year's Nobel Prize in physics recognizes the discovery of practical ways to achieve quantum tunneling, which electrons can jump across "forbidden" barriers.

I love the official explanatory cartoon from the Royal Swedish Academy of Sciences:

https://www.nobelprize.org/prizes/physics/2025/press-release/ #science #tech #technology #nobel

If you need a blast of beauty (and who doesn't?) I highly ...

2025-10-01T18:09:58Z

If you need a blast of beauty (and who doesn't?) I highly recommend browsing the new Astronomy Photographer of the Year winners. They're spectacular -- and neither of these shots even made it to #1.

https://www.rmg.co.uk/whats-on/astronomy-photographer-year/galleries/overall-winners-2025 #space #science #nature #art #photography

A new image of interstellar Comet 3I/ATLAS yielded some ...

2025-09-05T21:42:11Z

A new image of interstellar Comet 3I/ATLAS yielded some serendipitous art.

The Gemini South telescope observed the comet through four color filters. While tracking its motion, the telescope split the light from surrounding (unmoving) stars into little rainbows.

https://noirlab.edu/public/images/noirlab2525a/ #space #science #art #nature

Warped light makes it possible to measure the black hole at the ...

2025-09-04T21:22:59Z

Warped light makes it possible to measure the black hole at the center of this galaxy, known as the "Cosmic Horseshoe."

It's a monster, 36 billion times as massive as the Sun, possibly the biggest black hole known.

Some very cool astrophysics sleuthing here!

https://ras.ac.uk/news-and-press/research-highlights/most-massive-black-hole-ever-discovered-detected #space #science #nature

Interstellar comet 3I/ATLAS is slowly giving up its secrets. New ...

2025-08-26T13:53:41Z

Interstellar comet 3I/ATLAS is slowly giving up its secrets. New JWST observations give a great view of its lopsided, dusty coma & show unusually high levels of carbon dioxide billowing off its nucleus.

These are clues about how it formed long ago in a star system far, far away.

https://arxiv.org/abs/2508.18209 #space #science #nature

Last week I came across a remarkable archival document by ...

2025-08-24T00:44:14Z

Last week I came across a remarkable archival document by astronomer William Herschel. He describes his telescopes as time machines, capable of "penetrating into time" as much as 1,910,000 years into the past.

His specific numbers were off, but his insight was spot on. In the year 1800!

#space #science #history #nature

Let's get this over with: Astronomers just found a new moon ...

2025-08-19T16:13:21Z

Let's get this over with: Astronomers just found a new moon around Uranus.

It's part of an unusual group of 14 mini satellites orbiting close to the planet, within the orbit of its 1st major moon, Miranda. They may relate to the planet's rings & odd, sideways tilt.

https://science.nasa.gov/blogs/webb/2025/08/19/new-moon-discovered-orbiting-uranus-using-nasas-webb-telescope/ #space #science #nature #uranus

Fifteen years of radio observations yielded this amazing view ...

2025-08-18T02:12:55Z

Fifteen years of radio observations yielded this amazing view down the throat of a black hole.

We're looking into a jet of plasma shooting out from a supermassive black hole, called PKS 1424+240. The lines depict intense magnetic fields threaded through the jet.

https://www.mpg.de/25171297/eye-of-sauron-in-deep-space?c=2249 #space #science #nature

4,000 years ago, the star DFK 52 spit out a huge cloud of gas ...

2025-08-08T22:50:16Z

4,000 years ago, the star DFK 52 spit out a huge cloud of gas & dust--nearly as massive as our entire Sun. We don't know why, but we can see the result.

This is a velocity image of the star, which is likely to explode soon as a supernova. Blue indicates gas moving toward us, red indicates gas moving away.

https://www.eso.org/public/images/potw2531a/ #space #science #nature #astronomy

En route to Jupiter, NASA's Europa Clipper captured this ...

2025-08-04T09:02:49Z

En route to Jupiter, NASA's Europa Clipper captured this ethereal thermal (infrared) image of Mars and its two tiny moons.

We still don't know if they are captured asteroids, or the splattered remains of ancient impacts.

https://photojournal.jpl.nasa.gov/catalog/PIA26567 #space #science #astronomy

At an event celebrating the 100th anniversary of quantum ...

2025-07-31T13:33:57Z

At an event celebrating the 100th anniversary of quantum mechanics, physicists were polled on their view of quantum theory.

Their wildly divergent answers illustrate the difference between observation and interpretation.

https://www.nature.com/articles/d41586-025-02342-y #science #nature #physics #philosophy

The combined PUNCH images create the funky propeller effect. Look ...

2025-07-28T20:52:13Z

In reply to nevent1q…qrmt
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The combined PUNCH images create the funky propeller effect.

Look closely in the background and you can see Orion at the bottom and Jupiter at middle left. The Sun's extended corona is faint enough that you can see the stars right through it.

NASA's new PUNCH mission is a constellation of 4 small ...

2025-07-28T20:51:43Z

NASA's new PUNCH mission is a constellation of 4 small satellites that collectively provide an unprecedented view of giant eruptions breaking free from the Sun.

This first-release video compresses about 6 days of observations.

https://science.nasa.gov/blogs/punch/2025/06/10/nasas-punch-releases-its-first-images-of-huge-eruptions-from-sun/ #space #science #nature #nasa

2. Another object, 2015 OU194, is in a 3:4 resonance with Uranus, ...

2025-07-26T01:35:50Z

In reply to nevent1q…5vej
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2. Another object, 2015 OU194, is in a 3:4 resonance with Uranus, meaning it completes 3 orbits for every 4 of Uranus. The object is classified as a "centaur."

So yeah, there's a centaur waltzing around Uranus in 3:4 time.

https://iopscience.iop.org/article/10.3847/2515-5172/aded08 #science #space #nature

Lots of news just came out about strange, rhythmic goings-on in ...

2025-07-26T01:33:51Z

Lots of news just came out about strange, rhythmic goings-on in the outer regions of our solar system.

1: An object called 2020 VN40 moves in sync with Neptune (1 orbit for every 10 of Neptune), suggesting a large population of bodies in similar resonances.

https://www.cfa.harvard.edu/news/astronomers-discover-rare-distant-object-sync-neptune #space #science #astronomy

A solar eclipse like no other: This is the first artificial solar ...

2025-07-19T15:38:48Z

A solar eclipse like no other: This is the first artificial solar eclipse created by two spacecraft flying in precise formation in orbit.

The European Space Agency's Proba-3 mission will be able to conduct precise studies of the Sun's corona & the process of powerful solar eruptions.

https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Proba-3_s_first_artificial_solar_eclipse #space #science #astronomy #technology

A recent buzz of gravitational waves has revealed the most ...

2025-07-15T19:47:11Z

A recent buzz of gravitational waves has revealed the most massive pair of merging black holes yet detected: 100 and 140x as heavy as the Sun.

These black holes are so huge that they must have formed from earlier black-hole mergers, like soap bubbles combining. 🧪🔭

https://skyandtelescope.org/astronomy-news/new-black-hole-merger-breaks-record/ #physics #astronomy #science #nature

A new study explores the burning question: What would happen if ...

2025-07-12T14:13:18Z

A new study explores the burning question:
What would happen if you tossed a paper airplane off the International Space Station?

The answers are fun...and could also provide practical insights into de-orbiting satellites & exploring the upper atmosphere.

https://www.sciencedirect.com/science/article/pii/S0094576525004047 #science #technology #space

NASA's Parker Solar Probe made the closest-ever studies of ...

2025-07-11T16:10:41Z

NASA's Parker Solar Probe made the closest-ever studies of the Sun -- and got this unprecedented look at multiple solar eruptions piling up on top of each other.

https://science.nasa.gov/science-research/heliophysics/nasas-parker-solar-probe-snaps-closest-ever-images-to-sun/ #space #science #nature #astronomy #nasa

An amateur astronomer may have just spotted the first known comet ...

2025-07-08T20:56:21Z

An amateur astronomer may have just spotted the first known comet (or asteroid) impact on Saturn.

We've seen impact flashes on the Moon & Jupiter, but this would be by far the most distant one yet observed. 🧪🔭

https://earthsky.org/space/did-space-rock-hit-saturn-photo/ #space #science #nature #astronomy

Comet 3I/ATLAS seems to be much larger and older than ...

2025-07-04T18:41:47Z

In reply to nevent1q…vaaj
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Comet 3I/ATLAS seems to be much larger and older than 'Oumuamua, the 1st discovered interstellar object.

In October, Comet ATLAS will pass 30 million km from Mars and might be visible to our spacecraft there. Many other observatories will be watching.

Discovery images below:

https://www.universetoday.com/articles/inbound-astronomers-discover-third-interstellar-object #science #nature

It's official: A new interstellar object is currently flying ...

2025-07-04T18:39:46Z

It's official: A new interstellar object is currently flying through our solar system at 61 km/sec.

Comet 3I/ATLAS, as it is now known, is only the 3rd known interstellar visitor. But the new Rubin Observatory is likely to find dozens more such objects in the coming years.

https://science.nasa.gov/solar-system/comets/3i-atlas/ #space #science #astronomy #nature

You'll be hearing a lot about the amazing new Vera Rubin ...

2025-06-23T13:42:16Z

You'll be hearing a lot about the amazing new Vera Rubin Observatory today. Here's a peek at its most important feature: an unusual optical design that gives it a HUGE field of view, allowing it to scan the entire visible universe, over and over.

https://www.lsst.org/about/tel-site/optical_design #science #technology #astrodon

The new Vera Rubin Observatory will make the most detailed ...

2025-06-23T13:07:57Z

The new Vera Rubin Observatory will make the most detailed time-lapse images of the universe ever created. It will map dark matter & dark energy, and identify millions of transient cosmic events.

Incidentally, it will also create breathtaking images. First looks, just released:

https://rubinobservatory.org/news/rubin-first-look #astronomy #space #science #technology

This discovery comes from the NSF's Green Bank Telescope in ...

2025-06-22T15:35:55Z

In reply to nevent1q…g6ut
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This discovery comes from the NSF's Green Bank Telescope in West Virginia. Its funding is set to be gutted, effectively scrapping the telescope, in the 2026 budget.

Jobs lost. Science lost. All to save a whopping...$7 million.

https://greenbankobservatory.org/about/telescopes/gbt/ #science #trump #tech

Interstellar clouds are brewing rich organic chemistry. ...

2025-06-22T15:33:47Z

Interstellar clouds are brewing rich organic chemistry. Astronomers just detected a complex molecule called cyanocoronene (C₂₄H₁₁CN) floating between the stars in Taurus.

We don't know if life is common in the universe. But prebiotic chemistry sure is.

https://public.nrao.edu/news/cosmic-chemistry-breakthrough-largest-aromatic-molecule-found-in-deep-space/ #science #space #technology

Remarkable advance in basic chemistry: Researchers have created ...

2025-06-21T20:34:41Z

Remarkable advance in basic chemistry: Researchers have created hexanitrogen, composed of six bound nitrogen atoms. It's the most energetic molecule ever made!

If it can be made & stored in bulk (big if) it could be a powerful rocket fuel or energy storage material.

https://www.chemistryworld.com/news/most-energetic-molecule-ever-made-is-stable-in-liquid-nitrogen/4021662.article
#science #tech #chemistry

Using new adaptive-optics techniques, researchers have created ...

2025-05-31T21:18:19Z

Using new adaptive-optics techniques, researchers have created ultra-high resolution images of the Sun's corona--and the results are astonishing.

This video shows "coronal rain": loops of magnetic plasma arching out from the Sun, cooling, and flowing back down.

https://nso.edu/press-release/new-adaptive-optics-shows-stunning-details-of-our-stars-atmosphere/ #space #science #NSF #nature

I recently visited the ALMA observatory in Chile. While I was ...

2025-05-22T17:18:24Z

I recently visited the ALMA observatory in Chile. While I was poking around the telescopes, ALMA researchers released amazing new views of planet-forming disks around young stars.

These are the most detailed images yet of new solar systems being born.

https://public.nrao.edu/news/exoalma/ #space #science #tech #nature

This is what it looks like when a planet gets blasted to bits by ...

2025-04-23T19:07:06Z

This is what it looks like when a planet gets blasted to bits by its star. Data left, interpretation right.

We can study the inner structure of a dying planet, 140 light years from Earth, as it is peeled away by its star, layer by layer.

https://news.mit.edu/2025/astronomers-discover-planet-thats-rapidly-disintegrating-producing-comet-tail-0422 #space #science #death

Possibly the weirdest planet yet discovered? Newfound world ...

2025-04-16T22:01:02Z

Possibly the weirdest planet yet discovered?

Newfound world 2M1510 (AB) b appears to orbit not one but two stars...and they are actually failed stars, known as brown dwarfs...and the planet orbits sideways, in a unique up-and-down polar orbit.

https://www.eso.org/public/news/eso2508/ #space #science #astronomy #nature

Here's the other Mars moon -- Phobos, a bit larger and ...

2025-03-14T04:02:44Z

In reply to nevent1q…5qpc
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Here's the other Mars moon -- Phobos, a bit larger and closer, but still not much more than a space potato.

The Mars Express orbiter captured Phobos circling over the Martian surface, looking like a rock just hanging out in space. (Which is basically what it is.)

https://apod.nasa.gov/apod/ap230731.html #space #science #ESA #astronomy

See that little gray rock? That's Deimos, the mysterious ...

2025-03-14T02:59:28Z

See that little gray rock?

That's Deimos, the mysterious outer moon of Mars, spied yesterday as the Hera spacecraft buzzed by the Red Planet. Little Deimos is just 12km (8 miles) wide.

Such a cool shot.

https://www.esa.int/Space_Safety/Hera/Hera_asteroid_mission_spies_Mars_s_Deimos_moon #space #science #astronomy #photography

NASA's Lucy mission is named after the famed hominid fossil. ...

2025-02-27T05:29:24Z

NASA's Lucy mission is named after the famed hominid fossil.

Lucy (the spacecraft) just got its first look at 4-km-wide asteroid Donaldjohanson, named after the anthropologist who co-discovered Lucy's remains.

https://www.nasa.gov/centers-and-facilities/goddard/nasas-lucy-spacecraft-takes-its-1st-images-of-asteroid-donaldjohanson/ #space #science #nature

For your weekend relaxation: 1.8 billion years of plate tectonics ...

2024-12-21T03:08:13Z

For your weekend relaxation: 1.8 billion years of plate tectonics in 72 seconds.

Fun to locate your hometown (or ancestral town) and track where it's been over the years...or how long it's even existed as a physical location.

https://theconversation.com/witness-1-8-billion-years-of-tectonic-plates-dance-across-earths-surface-in-a-new-animation-238209 #science #earth #nature #history

As a kid I was fascinated by Project Mohole, an Apollo-style ...

2024-08-19T03:35:54Z

As a kid I was fascinated by Project Mohole, an Apollo-style effort to explore the inner Earth. Now it's happened!

Though in a slightly different way: The JOIDES Resolution ship has drilled 1,268 meters into mantle rocks at the mid-Atlantic ridge, providing an unprecedented look inside our planet.

https://www.whoi.edu/press-room/news-release/rocks-recovered-from-mantle-could-reveal-sources-of-volcanoes-and-origins-of-life-on-earth/ #science #earth #nature #history