Tagged With Comets

A rare chemical that helped DNA form may have come to Earth on comets from newborn stars, astronomers find


NASA's Hubble space telescope just took incredible photos of a visiting comet from another star system


A new image of a mysterious object careening toward our solar system strongly suggests it's the first comet from another star system



It's official: The second interstellar visitor ever discovered is about to fly through our solar system


Mysterious space objects like 'Oumuamua will visit our solar system again. Scientists may intercept the next one with a robotic probe.


The Hubble telescope spotted an asteroid that has grown two tails — and scientists think it's ripping itself to pieces



A bizarre interstellar object called 'Oumuamua continues to perplex astronomers a year after it vanished. Here's why a few scientists still wonder if it was alien.


NASA is about to explore Ultima Thule — the farthest object humanity has ever tried to visit. Here's what to expect from the 'mind-boggling' encounter 4 billion miles from Earth.


The Geminid meteor shower, one of the year's most spectacular, peaks tonight — here's how to watch


22 of the best photos of stars, galaxies, and space taken this year


A weird, cigar-shaped object flew through the solar system last year. Now astronomers may know where it came from


NASA has released its plan for nuking asteroids that threaten Earth -- and it includes a practice run



Evidence of an 'alien megastructure' 1,300 light-years from Earth is rapidly turning to dust


NASA's next billion-dollar mission will either visit Saturn's moon Titan or bring back samples of a distant comet


Astronomers have discovered a bizarre-looking object that came from outside our solar system


The Leonid meteor shower is peaking -- here's the best time to look for shooting stars



The asteroid that killed the dinosaurs triggered a global disaster far worse than scientists previously thought


Astronomers may have seen the first 'alien' space rock from beyond our solar system -- but some have doubts


A stunning new video shows what it's like to fly past a comet tumbling through space


The most spectacular meteor shower of the year peaks this week -- here's how to watch