See also stories tagged with Pluto
A pair of Columbia University astronomers using NASA's Hubble Space Telescope and Kepler Space Telescope have assembled compelling evidence for the existence of a moon orbiting a gas-giant planet 8,000 light-years away.
Carnegie's Scott Sheppard and his colleagues—Northern Arizona University's Chad Trujillo, and the University of Hawaii's David Tholen—are once again redefining our Solar System's edge. They discovered a new extremely distant ...
You never know what you're going to see when you visit a world for the first time—particularly when it's on the solar system's most distant frontier – but you can get ready to see it.
Every year throughout its 4.5-billion-year life, ice volcanoes on the dwarf planet Ceres generate enough material on average to fill a movie theater, according to a new study led by the University of Arizona.
An unusual infrared emission detected by the Hubble Space Telescope from a nearby neutron star could indicate that the pulsar has features never before seen. The observation, by a team of researchers at Penn State, Sabanci ...
The reason Pluto lost its planet status is not valid, according to new research from the University of Central Florida in Orlando.
Astronomers are engaged in a lively debate over plans to rename one of the laws of physics.
NASA's New Horizons spacecraft has made its first detection of its next flyby target, the Kuiper Belt object nicknamed Ultima Thule, more than four months ahead of its New Year's 2019 close encounter.
Successfully observing an object from more than four billion miles away is difficult, yet NASA's New Horizons mission team is banking that they can do that—again.
What happens when a star behaves like it exploded, but it's still there?
