APOD on Nostr: **Astronomy Picture of the Day** 07 August 2024 **Milky Way Behind Three Merlons** ...
**Astronomy Picture of the Day**
07 August 2024
**Milky Way Behind Three Merlons**
Image Credit & Copyright:
Donato Lioce;
Text: Natalia Lewandowska
(SUNY Oswego)
To some, they look like battlements, here protecting us against the center of the Milky Way. The Three Merlons, also called the Three Peaks of Lavaredo, stand tall today because they are made of dense dolomite rock which has better resisted erosion than surrounding softer rock. They formed about 250 million years ago and so are comparable in age with one of the great extinctions of life on Earth. A leading hypothesis is that this great extinction was triggered by an asteroid about 10-km across, larger in size than Mount Everest, impacting the Earth. Humans have gazed up at the stars in the Milky Way and beyond for centuries, making these battlefield-like formations, based in the Sexten Dolomites, a popular place for current and ancient astronomers.
#APOD #Astrospace #Astrobiology #Astronomy #SpaceTravel
https://apod.nasa.gov/apod/ap240807.htmlPublished at
2024-08-07 04:08:09Event JSON
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"content": "**Astronomy Picture of the Day**\n\n07 August 2024\n\n**Milky Way Behind Three Merlons**\n\nhttps://apod.nasa.gov/apod/image/2408/DolomitesSky_Lioce_4681.jpg\n\nImage Credit \u0026 Copyright: \nDonato Lioce; \nText: Natalia Lewandowska \n(SUNY Oswego)\n\n\nTo some, they look like battlements, here protecting us against the center of the Milky Way. The Three Merlons, also called the Three Peaks of Lavaredo, stand tall today because they are made of dense dolomite rock which has better resisted erosion than surrounding softer rock. They formed about 250 million years ago and so are comparable in age with one of the great extinctions of life on Earth. A leading hypothesis is that this great extinction was triggered by an asteroid about 10-km across, larger in size than Mount Everest, impacting the Earth. Humans have gazed up at the stars in the Milky Way and beyond for centuries, making these battlefield-like formations, based in the Sexten Dolomites, a popular place for current and ancient astronomers.\n\n#APOD #Astrospace #Astrobiology #Astronomy #SpaceTravel\n\nhttps://apod.nasa.gov/apod/ap240807.html\n",
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