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.
Why Can’t We Find Planet Nine?
Astronomers suspect that there’s a large planet hiding out in the distant fringes of the solar system. At a recent workshop, they brainstormed ways to coax it into view.
The Popular Creation Story of Astronomy Is Wrong
The old tale about science versus the church is wide of the mark.