The outer solar system once seemed like a quiet backwater. But a glut of tiny, strange moons with unruly orbits are coming ...

NASA astronaut Jessica Meir captured a breathtaking view of auroras on Earth from orbit while sheltering with her fellow ...

Our solar system may have hosted up to six giant planets in its first hundred million years, a new study suggests. The findings paint a more crowded picture of the early outer solar system than ...

NASA, in its mission to send a craft to explore Titan, one of Saturn’s many moons, faced a dilemma. Dragonfly, the rotorcraft that will explore Titan, needed a heat shield to survive a two-hour ...

NASA's Perseverance rover has discovered unusual rock formations on Mars that resemble human-made stacks.

Over more than a decade at Mars, the orbiter revealed how the solar wind strips away the planet’s atmosphere — and why the ...

For All Mankind is a dense, novelistic series with deep world-building and terrific character work—which means a good book is ...

The Kepler telescope changed how we saw the sky. It’s just one of the devices we’ve sent out beyond the reach of humans to ...