Data collected by NASA's InSight lander suggest that ancient internal processes are responsible for the "Martian dichotomy" ...

Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how ...

Astronomers mistook a car SpaceX blasted into space years ago as an asteroid. The brief mix-up highlights the sometimes ...

If planets had social media accounts, the solar system would showcase a frenzy of unique personalities. Mercury tweets at ...