A deep-sea detector glimpsed a particle with 220 million billion electron volts of energy — around 20 times as energetic as any neutrino seen before.

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

Boeing informed its employees working on NASA's Artemis program that it was preparing for as many as 400 layoffs connected to ...