Late October presents a perfect opportunity to spot the ancient light of the Andromeda galaxy as it climbs high overhead to brighten the autumn night sky. The Andromeda Galaxy (M31), the Milky Way's ...

There may be no enterprise that lends itself so well to the camera as space travel. The universe is a riot of color and light—of galaxies and planets and brightly hued moons. The people who explore ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

For more than a century, physics has treated space and time as the smooth stage on which the universe unfolds, a flexible fabric that bends but never breaks. A new wave of theories is now challenging ...

From eclipses on demand to a rare interstellar visitor to the chances of Earth being flung out of orbit, some news in 2025 made us ponder our place in the universe. Here’s a look at some of our ...