A new study has found that a hidden bias in galaxy models can skew gravitational-wave measurements of how fast the universe is expanding. That finding complicates one of astronomy’s most promising ...

NASA has officially tracked 6,000 confirmed exoplanets—planets outside our solar system—a milestone that reflects decades of cumulative discoveries and ongoing research efforts. This achievement, ...

Are we alone in the universe? Are we alone in the universe? The search for exoplanets—planets orbiting stars beyond our solar system—is helping scientists get closer to an answer. From hot Jupiters to ...

Far away in the Ursa Major constellation is a swirling galaxy that would not look out of place on a coffee made by a starry-eyed barista. NGC 3895 is a barred spiral galaxy that was first spotted by ...