New Horizons switches into "flyby mode" for its July 14th close encounter.
New Horizons will make its approach to our former ninth planet on July 14.
It is essentially common knowledge in this day and age that phenomena in space can play a significant role in shaping life on earth....
The study of Philae's comet will continue for an additional nine months.
The Phoebe ring is seven thousand times the size of Saturn itself.
The first model of the night sky was made in the Bronze Age.
We can now see Ceres's white spots very clearly, but scientists are still mystified as to what they are.
Astronomers honored the late and great Spock with his very own asteroid.
Amazing video explains how Hubble may detect alien life in the near future.
Pluto's weird moon Nix is not only shaped like an egg, it jerks and tilts crazily as it orbits.
The President of the United States gave his stamp of approval to this glittering star cluster.
What if the Andromeda Galaxy, the Crab Nebula, or a black hole were right next to us?
More than six months after Philae's historic landing, Rosetta sends back pictures of the comet's surface landscape and faraway...
The proposed Thirty Meter Telescope (TMT) has been the subject of awe, controversy, and Teenage Mutant Ninja Turtles mix-ups (just...
NASA snaps the first image of white dwarf stars migrating from the center of a cluster to the outskirts.
Debris from Halley's comet will cause a meteor shower overnight, peaking on Wednesday at 9am.
New photos from New Horizons detect many planetary features on Pluto, including a possible solar ice cap.
With just one more day before MESSENGER runs out of propellant and crashes into Mercury's surface, the probe sends back some of the...
This image of the Thor's Helmet Nebula is gorgeous, but once you see Mon Calamari, you won't be able to un-see it.
Later this week, NASA's MESSENGER probe will end its four-year journey and crash into Mercury's surface.