April 12 is a full moon and with the right telescope, you're sure of a stunning view. Then, on April 18, the Whirlpool Galaxy (M51) and Pinwheel Galaxy (M101) will be high in the sky near the Big ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting ...

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... If Planet Nine is out there, this telescope ...

Brown says he couldn't have asked for a better telescope to hunt his celestial quarry. "If you were to hand me a big wad of cash and say, 'Go build a telescope to go either find this Planet 9 or ...

Brown says he couldn't have asked for a better telescope to hunt his celestial quarry. "If you were to hand me a big wad of cash and say, 'Go build a telescope to go either find this Planet 9 or find ...