Citizen science

Space Cosmic ‘pearls’ emerge around the surviving star of an ancient supernova

Pa 30’s apparent streaks are chains of enormous gas knots, while its surviving star shows little sideways recoil from the explosion.

Space CosmicWatch lets students build a detector for invisible cosmic-ray particles Joshua Shavit

Discoveries Squirrel colors spotlight local evolutionary changes in urban species Rebecca Shavit

Space Amateur astronomer leads scientists to a massive 390-million-year-old impact crater in Quebec Joshua Shavit