"The data from the termination shock encounter will be a treasure trove for space physicists worldwide who are eager to ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

As Stern told reporters Monday, “The Pluto system is enchanting in its strangeness, its alien beauty.” The newest pictures, from the actual flyby, won’t be transmitted until well afterward ...

The annual event celebrates the discovery of the little planet with a big heart and other scientific advances at Flagstaff, ...

Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

Whether Pluto is officially a planet is the least interesting thing about the runt of the solar system, astronomers will tell you 95 years after the discovery of the fascinating and sometimes ...

Sputnik Planitia is a white basin measuring 750 by 1,250 miles near Pluto's equator that was discovered during the flyby. Although the dwarf planet is covered in an ice shell, that thins ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Pluto was identified in 1930, but by 1994, it was still little more than a blurry pixelated smudge on astronomers’ screens. Today, we marvel at its icy plains, towering mountains, and stunningly ...

A group of New Horizons scientists took to Reddit on July 14 to answer questions about the Pluto flyby, and it quickly became clear that the preliminary data holds some curiosities. For starters ...