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

That will allow the observatory to detect anything that changes — like, say, Planet Nine moving across the ... Well, ever since Pluto got demoted, schools today have kids memorizing eight ...

So far, the only evidence has come from some oddities in the orbits of small Pluto-like bodies ... anything that changes — like, say, Planet Nine moving across the sky. "If it's there, we ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

If Planet Nine is out there, this telescope might actually ... So far, the only evidence has come from some oddities in the orbits of small Pluto-like bodies. The cosmic weirdness could be ...