If you grew up learning that Pluto was a planet, chances are you were sticking to that, no matter what the IAU said. After ...

Although Pluto's orbit was more elongated than the other planets' (and even crossed the orbit of Neptune—not the kind of thing you would expect a decent planet to do), it seemed alone in its ...

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

The RTL-SDR dongles get most of the love from people interested in software-defined radio, but the Pluto is also a great ...

As well as that, April on Pluto is a month-long celebration of Earth Day, with the streamer releasing a bunch of breathtaking ...

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

The Sedona Heritage Museum hosted Sedona-based author Diane Phelps Budden and Lowell Observatory historian Kevin Schindler ...

Pluto was once called the ninth planet, but in 2006, scientists changed its status to a dwarf planet. A planet must clear its orbit of other objects, but Pluto shares its space with many small icy ...