space
Jupiter Is Flinging Comets Toward Earth

Some astronomers believe that Jupiter, instead of protecting Earth from dangerous comets and asteroids, is actively flinging objects into the inner solar system. New research now demonstrates this complex process in action. Read More >>

space
Newly Discovered Interstellar Comet Has an Official Name: 2I/Borisov

The second known interstellar visitor to our solar system has been named 2I/Borisov, in honour of the amateur astronomer who first detected the rare object. Read More >>

space
How Does the New Interstellar Object Differ From ‘Oumuamua?

The second interstellar object on record has visited our solar system, according to astronomical observations made in recent weeks. But how does this new visitor differ from ‘Oumuamua, the first interstellar object? Read More >>

space
We Now Have an Image of the Second Interstellar Object Ever Observed

Last week, the Minor Planet Centre announced that astronomers had tentatively discovered the second interstellar object on record – and now we have a picture of it. Read More >>

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 >>