Astronomy
How Nearby Stellar Explosions Could Have Killed Off Large Animals
A new study suggests that subatomic particles called muons streamed through the atmosphere and fatally irradiated megafauna like the monster shark megalodon.
The Woman Who Reinvented the Moon
A MacArthur “genius grant” winner writes a new lunar origin story.
Our Attitude Toward Aliens Proves We Still Think We’re Special
Why we downplay Fermi’s paradox.
