Thanks to rapidly advancing telescope technology, astronomers have detected more than 5,600 planets outside our solar system.

Living with a stranger is hard. You may have different tastes, different schedules or even different opinions on how long ...

Astrophysicists estimate that any exponentially growing technological civilization has only 1,000 years until its planet will ...

Rather than forming from an ancient collision between Earth and another planet, the moon may have been snatched from another ...