A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

If you like it then you should put a ring on it. Saturn is home to the Solar System’s most epic ice rink. Being so far from the Sun, the water in its rings is frozen into ice. It is one of four ...

Simpson explained, “If it’s one or two Earth masses, which is still a pretty big planet, our inner Solar System would still remain quite nice.” However, the situation becomes far more ...