space
Astrophotographer Discovers a Tiny ‘Churymoon’ Around Famous Comet

An astrophotographer has spotted what looks to be a moon orbiting the comet 67P/Churyumov-Gerasimenko, the target of the European Space Agency’s Rosetta Mission. Read More >>

space
The European Space Agency Has a Plan to Intercept a ‘Pristine’ Comet

With the historic Rosetta mission now firmly in the rear view mirror, the European Space Agency has set its sights on a different kind of comet, that is, a comet that’s never visited the inner reaches of the solar system. Called Comet Interceptor, the mission will include a mothership and two 'daughter' spacecraft. Read More >>

science
Piece of a Comet Found Tucked Inside Meteorite

Scientists have found a cometary building block in an unexpected place: deep inside a meteorite, according to a new paper. Read More >>

space
Comet Photobombs NASA’s New Planet-Hunting Satellite

During tests of NASA’s new Transiting Exoplanet Survey Satellite (TESS), a comet was seen streaking across the sky—a fortuitous event that showcased the power of this new planet-seeking telescope. Read More >>

space
Rosetta Image Makes You Feel Like You’re on the Surface of a Comet

The Rosetta orbiter ended its mission in September 2016, but science fans continue to unearth and reprocess some of its incredible images of comet 67P/Churyumov-Gerasimenko. Check out this one, above. Read More >>

space
Asteroid Mining Might Just Work—If Only We Can Land on the Dang Things

The Rosetta mission’s Philae lander descended toward the two-and-a-half-mile-wide comet at a human’s walking pace. For seven tense hours, scientists in Darmstadt, Germany monitored its radio signal. They would have no idea whether they’d done everything correctly until after the moment of touchdown. If all went well, the lander would press two harpoons into the dusty surface of 67P/Churyumov–Gerasimenko, sticking itself firmly in place. If not, well, Philae could bounce right off and be lost to space, or it could be sucked into a pit of soft dust. Read More >>

space
Interstellar Comet ‘Oumuamua Has a Built-In ‘Propulsion’ System

Remember that cigar-shaped interstellar object that whizzed through our Solar System last year? It was pretty weird, right? Well, new research shows ‘Oumuamua is even stranger than we realised. Read More >>

space
The Rosetta Image Archive Is Now Complete and Freely Available, so You Can See a Comet Like Never Before

The European Space Agency’s Rosetta mission to the comet 67P/Churyumov-Gerasimenko was one for the ages, providing an unprecedented look at this oddly shaped celestial object. The Rosetta probe captured nearly 100,000 images over the course of its mission, all of which are now freely available to the public in a single Rosetta archive. Read More >>

space
Wild New Theory Suggests Pluto Formed From a Billion Comets

Pluto may not be a planet, but it remains one of the most intriguing objects in the outer Solar System. Its unexpected chemical composition has confounded scientists for years, but a new theory may finally hold the answer. Pluto, according to a pair of Southwest Research Institute scientists, is basically an overgrown comet. Read More >>

space
Incredible New GIF Shows Cosmic ‘Snow’ on the Surface of a Comet

I think I’m going to let this one speak for itself: Read More >>

astronomy
A Visiting Star Jostled Our Solar System 70,000 Years Ago

Around the same time our ancestors left Africa, a dim red dwarf star came to within 0.8 light-years of our Sun, marking the closest known flyby of a star to our Solar System. New research suggests Scholz’s Star, as it’s known, left traces of this interstellar encounter by perturbing some comets in the outer Oort Cloud. Read More >>

space
What the Hell is Going on With This Comet?

There’s already a strange story behind comet 41P/Tuttle-Giacobini-Kresák, or just 41P: It took almost 100 years to identify and occasionally flares. And now, its spin is rapidly slowing down. Read More >>

space
The First Known Interstellar Asteroid Looks Incredibly Weird 

Scientists know of 750,000 or so asteroids and comets—and all of them are part of this fine solar system. That is, all of them but one. And as new research shows, it’s weird as hell. Read More >>

space
This Is One of the Strangest Objects Ever Discovered in the Solar System

Is it an asteroid? A comet? Both? Observations by the Hubble Space Telescope are revealing new details about a strange binary asteroid that’s performing double-duty as a comet. It’s the first time scientists have ever seen such a thing. Read More >>

space
Lost Japanese Spacecraft Has Made a Key Measurement on Rosetta’s Comet

Japan’s Proximate Object Close Flyby with Optical Navigation (PROCYON) has been lost in space ever since its ion thrusters blew out in 2014. Since then, the tiny spacecraft has done its best to be useful, orbiting the Sun by itself. A new study reveals the PROCYON made some impressive observations on Comet 67P/Churyumov-Gerasimenko, the same comet the Rosetta spacecraft observed for two years before ending its mission in 2016. Read More >>