APOD on Nostr: **Astronomy Picture of the Day** 25 August 2026 **Earth's Shadow Visualized with ...
**Astronomy Picture of the Day**
25 August 2026
**Earth's Shadow Visualized with Lunar Eclipses**
Image:
Credit: Not provided
What’s creating this giant hole in space? This is not a black hole — it’s a shadow. It’s Earth’s shadow . Since at least the time of Aristotle , people have noted that Earth's dark shadow on the Moon during a partial lunar eclipse is circular -- although never a whole circle . Using modern digital technology , though, the images of multiple lunar eclipse s can be combined to show Earth's complete shadow. The featured image compilation by a perseistent astrophotographer is constructed from 22 years of lunar eclipses. The Moon is not eclipsed every month ( moon-th ) because the Moon's orbit is slightly tilted relative to Earth's orbit. Close inspection of some lunar eclipse images shows a faint blue band where Earth’s atmosphere filters out more red sunlight than blue. Later this week, a new lunar eclipse will occur and will be best visible in parts of North and South America, Europe, and Africa.
#APOD #Astrophoto #Cosmos #Astronomy #lookUp
https://apod.nasa.gov/apod/ap260825.htmlPublished at
2026-08-25 04:06:56 UTCEvent JSON
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"content": "**Astronomy Picture of the Day**\n\n25 August 2026\n\n**Earth's Shadow Visualized with Lunar Eclipses**\n\nImage: https://apod.nasa.gov/apod/image/2608/EarthShadow_Martin_4000.jpg\n\nCredit: Not provided\n\nWhat’s creating this giant hole in space? This is not a black hole — it’s a shadow. It’s Earth’s shadow . Since at least the time of Aristotle , people have noted that Earth's dark shadow on the Moon during a partial lunar eclipse is circular -- although never a whole circle . Using modern digital technology , though, the images of multiple lunar eclipse s can be combined to show Earth's complete shadow. The featured image compilation by a perseistent astrophotographer is constructed from 22 years of lunar eclipses. The Moon is not eclipsed every month ( moon-th ) because the Moon's orbit is slightly tilted relative to Earth's orbit. Close inspection of some lunar eclipse images shows a faint blue band where Earth’s atmosphere filters out more red sunlight than blue. Later this week, a new lunar eclipse will occur and will be best visible in parts of North and South America, Europe, and Africa.\n\n#APOD #Astrophoto #Cosmos #Astronomy #lookUp\n\nhttps://apod.nasa.gov/apod/ap260825.html\n",
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