The subatomic particles are incredibly numerous. About 1,000 neutrinos from stars other than the sun pass through a thumbnail ...

Look up at the night sky and you might feel dwarfed by the glimmer of countless stars. Now shift that view downward, press your mind to the ground and the green world under your feet—and you’ll find ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

On Jan. 15, 2025, the Gaia spacecraft took its last image. Then the craft ran a final round of engineering tests, fired its thrusters to leave Earth behind, and slipped into an orbit around the Sun, ...