Scientists found tryptophan, the ‘sleepy’ amino acid, in an asteroid — Here’s what it means

Tryptophan, the essential amino acid behind the Thanksgiving myth that eating turkey can make you sleepy, has been found to ...
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Astronomers spot a rule-breaking star circling a quiet black hole

Astronomers have identified a star locked in a tight dance with a black hole that appears to be far quieter than theory says it should be, challenging long-held assumptions about how these extreme ...