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cem8kaya.bsky.social
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cem8kaya.bsky.social
Dünya dışı amino asit ve DNA nükleobazları, yani bildiğimiz A G C T U moleküüllerinden bulunmuş. Paperlara bakmak lazım.
natureportfolio.nature.com Nature Portfolio @natureportfolio.nature.com · 7d
Rock and dust samples brought back from the near-Earth asteroid Bennu contain organic matter, including amino acids and all five DNA and RNA nucleobases, according to two papers published in Nature Astronomy and Nature in January.
go.nature.com/40SlwfF
go.nature.com/3CC6ZLO
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This figure illustrates molecules and minerals discovered in samples of near-Earth asteroid Bennu, which were delivered to Earth by NASA’s OSIRIS-REx mission in September 2023. The upper left panel depicts precursor molecules like ammonia and formaldehyde, while the upper right depicts salts and clays. These early ingredients mixed with water inside the parent body to undergo chemical reactions and synthesize organic molecules, shown at bottom. The lower right panel depicts nucleobases, the genetic components of DNA and RNA, while the lower left depicts amino acids, the building blocks of proteins. The Bennu samples contain all five of the nucleobases that are found in DNA and RNA, and 14 of the 20 amino acids that life uses to build proteins. Credit: NASA
January 4, 2026 at 4:20 AM
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drnereide.bsky.social
"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars.
We are made of starstuff."

— Carl Sagan. Cosmos (1980).

Image source➡️ imagine.gsfc.nasa.gov/news/10sep08...

🔭 🧪 #science

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The image is an artist's illustration of one model of the bright gamma-ray burst GRB 080319B. The explosion appears highly beamed into two bipolar jets, with a narrow inner jet (white) surrounded by a wider outer jet (green).
October 9, 2025 at 10:18 PM
cem8kaya.bsky.social
Dünya hızla dönüyor ve gündemi gördükçe midem bulanıyor. 80lerde doğanların bağışıklığı ve direnci de artık kar etmiyor.
October 10, 2025 at 1:02 AM