Astronomers have discovered a planetary system that appears to flip one of astronomy's most reliable rules on its head.

The planets around a nearby star seem to be in the wrong order, hinting that they formed through a different mechanism than the familiar one by which most systems grow ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

Our Solar System contains eight planets (sorry, Pluto) orbiting around the Sun. But while all planets are important members of the club, if we’re being honest, we know there’s a crown jewel of our ...

Scientists used the European Space Agency's Cheops satellite to discover that the planetary system around the star LHS 1903 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. This image of Pluto was made after the New Horizons spacecraft flew past the dwarf planet on July ...