Featured in comets
A new ’Oumuamua theory could mean many more interstellar visitors are headed our way
‘Oumuamua sure looked like an oddball, but similar planetary tatters could be floating everywhere.
Our newest alien comet may have been born out of a dying star’s vomit
Borisov may represent an entirely new type of celestial body.
Scientists are scrambling to take more photos of this seemingly alien comet
The object is the second we've observed that has origins in another solar system.
Comets could all come from the same place
Data from distant solar systems is helping researchers reconstruct the birth of our own.
That giant cigar that zipped through our solar system definitely wasn’t a spaceship
Scientists have more thoughts on ‘Oumuamua.
This comet stuffed inside a meteorite is the ultimate cosmic turducken
And it could teach us about the early solar system.
This weekend’s comet will be the brightest of the year
46P/Wirtanen will be fuzzy, green, and visible with the naked eye.
What’s the difference between a comet and an asteroid?
They both orbit the sun, but they're very different.
15 incredible photos taken by the Rosetta spacecraft
You can browse more than 100,000 images from space. Here are our favorite shots.
How to tell an asteroid from a comet, even when its from outside our solar system
An ‘Oumuamua by any other name would still be as fascinating.