SpaceX confirmed that one Starlink satellite recently exploded in orbit, and it is now tumbling to re-enter the planet.

What would really happen if a star exploded close to Earth? A nearby supernova is one of the most powerful events in the universe, capable of releasing more energy in seconds than our Sun will in its ...

A new explanation for the solar system's radioactive elements suggests Earth-like planets might be found orbiting up to 50 per cent of sun-like stars ...