Space & Cosmos
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In Space, Sperm Can Still Swim—They Just Have No Idea Where They're Going
A startling discovery: human sperm maintain full swimming speed in microgravity but lose the ability to navigate, dropping fertilization rates by 30%. Gravity does more than keep us grounded.
Space & Cosmos
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Tiny Galaxies Are Getting Crushed by Impossibly Huge Black Holes
Two dwarf galaxies contain black holes that make up 60% of their total mass—a cosmic paradox that shatters everything we thought we knew about how galaxies form.
Space & Cosmos
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Primitive Galaxies Are Making Dust From Almost Nothing
Dwarf galaxies with almost no metals are somehow forging complex dust grains anyway, forcing astronomers to rewrite how the early universe built itself.