A new analysis of supernovae observations hints that dark energy may change strength over time. It could mean we need to recalculate the universe's fate.
NASA's Chandra X-ray Observatory has found a baby exoplanet that is slowly losing its atmosphere and shrinking as it is pummeled by radiation from its star.
It's highly unlikely the interstellar comet 3I/ATLAS is an alien spacecraft. However, here are things scientists would look for to detect an alien probe.
A new study of data from 2 Mars orbiters shows vast ancient rivers on Mars in the Noachis Terra region. They show Mars was even wetter than we first thought.
HD 135344 Ab is a young massive exoplanet orbiting a star in a binary star system 440 light-years away. The other star still has its planet-forming disk.