About 70,000 years ago
Feb. 18, 1930: Pluto is first identified in photographs of the night sky
Samples from Apollo 17, the final lunar landing, tell a violent tale of the early solar system
Kepler-444 could help pinpoint when planets started to form
Think you've seen big rings in our own solar system? Not even close.
This discovery, if accurate, could completely redraw the map of the Solar System
Comet Lovejoy is passing by for the first time in more than 8,000 years
NASA's reprocessed picture of Jupiter's Europa gives us a fresh look at the likeliest place in the solar system for extraterrestrial life.
A pair of sort-of comets pose a puzzle for astronomers
This mission may be our most informative one yet
We already knew Miranda, one of Uranus's five major moons, has "one of the strangest and most varied landscapes among extraterrestrial bodies." Now, we...
That's more than 4.5 billion years old
A major haul by the Kepler Space Telescope has astronomers cheering
Jupiter's Ganymede gets its own map
The difference between an asteroid and a comet was always thought fixed—but now a new paper says the two celestial bodies may be more similar than we thought
For half a century, the U.S. has been sending probes into deep space—and for half a century the appropriately named Deep Space Network has been keeping in touch...
Stuck in a solar system in which planets come in only two sizes—big and small—we're finally learning about all the ones in between
But that's no indication of alien life
The same heat trapping processes that are causing so much trouble on Earth once made Mars a very pleasant place
It's a comet! It's an asteroid! It's a bit of both—and it's one of the niftiest little members of the solar system