For a very long time, it was thought that the planets in our solar system represented the basic model of the universe. Rocky planets were found near the Sun, followed by gas giants further out from ...

Rogue planets sound like rare travelers among the stars, freed from the gravitational constraints of a host system, left to forever wander the interstellar void. But modern models suggest these free ...

Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some have already been found. Thanks to rapidly advancing telescope technology, ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent ...