For the first time, astronomers have imaged dozens of belts around nearby stars where comets and tiny pebbles within them are ...

Suddenly, in photos taken six days apart in January ... Over millions of years, that atmosphere escaped into space. Pluto is the only place in the solar system where we can study something ...

"Pluto is showing us a diversity of landforms and complexity of processes that rival anything we've seen in the solar system." As the craft continues to transmit photos back to Earth, scientists ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

For decades, Pluto was celebrated as the ninth planet of our solar system. However, in 2006, the International Astronomical ...

The Pluto fly-by caps a half-century of solar-system exploration that has yielded ... decencies of civilization — taking close-up pictures and chemical readings of a mysterious world nine ...

"Charon is HUGE relative to Pluto, to the point where they are actually a binary," Denton explained. "It's half Pluto's size and 12% of its mass, which makes it much more similar to the Earth's moon ...

It’s thought to be populated by icy objects and comets, believed to be remnants left over from the formation of the solar system. ForbesIn Photos ... photographed dwarf Pluto in 2015—the ...

Charon is half the size of Pluto, “making it the largest known moon relative to its parent planet in our solar system,” NASA ... SWRI via Getty ... [+] Images) Researchers studying Pluto ...

But these theories didn’t account for the fact that Pluto and Charon may have more structural integrity as icy, rocky bodies on the frigid edge of the solar system. “Pluto and Charon are ...