A group of comets with unexplained movements presents a quandary

Leaked budget documents indicate that key NASA and NOAA research projects, such as crucial climate research and the Nancy Grace Roman Space Telescope, are at risk of being defunded in 2026

The U.S. leads the world in fusion energy research. It can’t squander that lead like it did with microchips

Take an unforgettable journey to witness the 2026 total solar eclipse from a semi-private ship. Surrounded by the shimmering sea, you’ll feel the collective excitement as you watch totality approach with fellow science lovers and your trip leader, Senior Editor Clara Moskowitz. Learn More.

In just the first 259 days of data collection, KATRIN, a beta-decay-based detector in Germany, has set the smallest upper limit yet on the mass of the neutrino—the universe’s lightest massive particle

At the lower end, and to the bitter end, defining a star is tougher than you might expect

Mathematicians describe the most beautiful and beguiling forms and surfaces they know

The weirdest subatomic particles require enormous equipment to study