Over the past 18 months, astronomers have painstakingly tracked a dozen tiny moons that they found circling the giant planet Jupiter.
A new National Academies study assesses NASA's efforts to protect neighboring worlds from contamination and recommends ways the space agency could do a better job.
With opposition only weeks away, will the current global dust storm finally break? We look at the prospects.
The expedition off the coast of Washington state performs a first, recovering meteorite fragments from a documented fall.
Scientists aren't comfortable yet saying that organics on Saturn's icy moon arose from life, but they have an idea of what to look for next.
Researchers have found that 'Oumuamua — the first confirmed object to enter the solar system from interstellar space — was a comet, releasing just enough gas to subtly change its course.
We got a peek at a new worldlet in the inner solar system this week, as the Japanese Aerospace Agency's (JAXA) Hayabusa-2 gave us our first good looks at the tiny asteroid 162173 Ryugu.
Will Mars soon be hidden under a veil of dust? Let's hope not. We explore the current storm and the planet's upcoming close opposition.
Scientists have discovered that a supervolcano likely created a mysterious rock formation on Mars some 3 billion years ago.
The dust storm on Mars that broke out at the end of May is now affecting the skies across the entire planet.
A new study sheds light on an old mystery surrounding anomalous readings from the Apollo landing sites.
New research shows that interactions between small objects beyond Neptune’s orbit —and not a hypothetical Planet Nine — could be the reason some far-flung solar system objects “detach” from their original orbits.
The Curiosity rover has detected organic molecules in ancient rocks on Mars.
An innovative technique has allowed NASA's Curiosity Rover to resume drilling Martian rocks. But the partially successful test shows that more work remains to be done.
Scientists propose that Saturn’s meddling helped create the four giant Galilean moons orbiting Jupiter.
Planetary scientists think they’ve found wind-built ripples of methane ice on the king of the Kuiper Belt.
A new analysis of our stellar neighborhood reveals 7 times as much nearby stellar traffic as previously known.
An intriguing asteroid was spotted traveling backwards around Jupiter back in 2015. Now a team of researchers think it could have formed around another star.
A small helicopter will be the first mission to fly through the skies of Mars.
A new analysis of decades-old data from NASA’s Galileo spacecraft, which reached the Jupiter system in 1995, shows the best evidence yet for plumes from the icy moon Europa.
The Mars Cube One mission — the first to send CubeSats into interplanetary space — will test revolutionary relay technologies as it accompanies Mars Insight to the Red Planet.
Rising through thick fog from Vandenberg Air Force Base in California. NASA's latest mission intends to probe deeply into Mars and decipher how it formed.
Curiosity spotted polygonal shapes on the surface of rocks on Mars — now, analysis of these mud cracks is revealing the history of the long-ago lake that once filled Gale Crater.
The International Astronomical Union has approved names for features on Pluto's largest moon, Charon.
A new analysis of more than 800 telescopic observations suggests that our first known interstellar visitor could have the shape of a cigar or a fat disk.