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

The cosmos is filled with wonders yet to be ... the gravitational effects it may exert on other objects. Finding Planet Nine ...

But no one has actually spotted Planet 9. It's so far away, it would be a faint object, and the swath of sky that researchers have to search is huge. Now, though, researchers are close to finally ...