New research provides some clues about our solar system's most mysterious planet.
By studying Martian meteorites, scientists think they've found an explanation for ancient eruptions on the Red Planet.
We're under a time crunch.
It defied the odds to discover thousands of planets.
Here are some highlights from its journey
And you thought this summer was hot
InSight is blasting off this week.
It's time to return to our hellish neighbor.
You can't see it—but Hubble can.
It's surprisingly lacking in heavy elements
On Io, the floor is basically lava
Three of them may be habitable
Scientists aren't just jerking you around—this is about something more than your childhood nostalgia
And its clouds may be made of gemstones
Finally, a good use for climate change
And may be generating heat in the planet's atmosphere
Scientists are hot on the trail of our solar system's 9th planet
So close we might even be able to measure its wind speeds, GJ 1132b is a very important exoplanet
Could icy slush be driving the dwarf planet's geological activity?
Don't call it 'Arrakis'
Turning the heat up on this frigid space rock
Jupiter's moon is the best candidate for finding extraterrestrial life; here's how we're going to get there
Don't pack your bags yet