Passing stars may have altered Earth's orbit, and its climate, many times throughout cosmic history. New research digs into what that means when it comes to understanding our planet's past.
A bizarre object discovered by the James Webb Space Telescope may be a pair of 'rogue' planets ― but a new study finds they are emitting radio signals rarely seen from other worlds.
Earth and other terrestrial planets probably use their gravitational forces to tear apart asteroids ― but this creates more streams of smaller asteroids.
A brand-new meteor shower triggered by the 'Christmas comet' 46P/Wirtanen may appear over Earth for the first time on Dec. 12, though it will be visible from only a small sliver of the world.
Earth will become too hot to handle in a billion years. There's a (very) remote chance a passing star could save us by knocking our planet back into the habitable zone.