A planet orbiting seven suns sounds like pure science fiction — the kind of system that should collapse into chaos instantly.

Radiation on Mars is far more intense than on Earth because the Red Planet has virtually no magnetic field and a thin atmosphere to shield against cosmic rays and solar particles. Measurements by ...

There's a 4.3% chance of asteroid 2024 YR4 hitting the lunar surface and creating a collision so spectacular it will be like fireworks in the sky.