Researchers believe that 2017 OF201’s highly eccentric orbit points to a chaotic origin, possibly caused by a gravitational ...

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Pluto, with its heart-shaped ... one Plutonian year will have elapsed since the dwarf planet was first spotted, on Feb. 18, 1930. “NINTH PLANET DISCOVERED ON EDGE OF SOLAR SYSTEM; FIRST FOUND ...

When Pluto was discovered by Clyde Tombaugh in 1930 ... it was deemed large enough to be considered a planet. You may like New dwarf planet discovered beyond the orbit of Neptune Vesta, the ...

Before we get to the experts here’s how Dave described the discovery and death ... we’ve learned that Pluto is even more like the other planets than we thought back when it was formally ...

Today, the dwarf planet Pluto orbits the ... we can use the geology we observe on Pluto today to peer back in time and learn about what Pluto was like shortly after its formation,” said Carver ...

and there are several known dwarf planets in the Kuiper Belt, including Pluto; more will likely be discovered. Hello, curious kids! Do you have a question you’d like an expert to answer?

The discovery of the elusive Planet X was officially announced ... [Photos from NASA's Voyager 1 and 2 Probes] For decades, Pluto seemed like the sole occupant of the outer solar system.

"This object is in a class very much like Pluto," he said ... behind a handful of others that were discovered previously. "I would not call it the 10th planet," Marsden told SPACE.com.