Natural colour
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Earth from Space: Eye of the Sahara

The Copernicus Sentinel-2 mission captures a spectacular geological wonder in the Sahara Desert of Mauritania: the Richat Structure.…
Gaia BH2 (UCAC4 154-126202) is a binary consisting of a star and a stellar mass black hole (Credit: Legacy Surveys / D. Lang)
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The Star That Shouldn’t Exist

Studying the light from stars tells us their temperature, composition, age, and evolutionary state. But the red giant…