You Searched For "Kuiper belt" and got 20 results
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3 mins read
A comet has been spotted among Jupiter's ancient asteroids for the very first time
A centaur flying into a bunch of trojans sounds like the beginning of a bad joke, but that is exact…
2 mins read
NASA's 'Lucy' is going to travel 4 billion miles to explore seven Trojan asteroids — and an asteroid Moon
While conducting reconnaissance on their first target — Eurybates — the team was surprised to …
2 mins read
Scavenger hunt for Planet X just dropped another clue
So far three dwarf planets, including the Goblin, have been found in the fringes of our solar …
3 mins read
Astronomers discover an asteroid that's closer to the Sun than any other
The semi-major axis is a useful way to measure how far an asteroid is from the Sun on aver…
3 mins read
A mysterious rock orbiting Earth appears to be a chunk of the moon that was blasted away by a meteorite
The discovery could rewrite what we know about potentially dangerous space rocks and help better pr…
Marianne Guenot
4 mins read
How antimatter engines could fly humans to other stars in just a few years
Antimatter isn't just a sci-fi trope. Ryan Weed has been working on designing an antimatter propuls…
Adam Barnes
10 mins read
4 experts explain why Elon Musk's plan to colonize Mars is 'romanticized', not 'realistic', 'cosmic vandalism'
SpaceX founder Elon Musk said he plans to have a million people on Mars by 2050. Scientists say tha…
Maiya Focht
5 mins read
Watch NASA launch a spacecraft to explore ancient asteroids that lead and trail Jupiter around the sun
The Trojan asteroids have barely changed since the birth of our solar system. NASA's Lucy mission a…
Morgan McFall-Johnsen
2 mins read
Pluto was discovered 90 years ago this week. Controversy about its identity rages on.
When he discovered Pluto, Planet X became real - for a time. But in 2003, a world larger than Pluto…
Holly Secon
4 mins read
Why astrophysicists think there's a black hole in our solar system
Narrator: Now, before you freak out, you should know that our planet isn't about to get sucked up a…
David Anderson,Bob Hunt
5 mins read
Planet 9, our solar system's mysterious missing world, could be an ancient black hole orbiting the sun, a new paper suggests
The scientists behind the new study say that direct observations of the mysterious object - if ast…
Morgan McFall-Johnsen
3 mins read
These new photos from NASA's New Horizons spacecraft were captured farther from Earth than any image ever taken
But NASA's New Horizons spacecraft has now broken that record, sending back several photos from the…
Kevin Loria
5 mins read
New videos of the farthest object humanity has ever explored show that it flips like a giant hourglass
During the flyby, the probe took a series of images that revealed its shape and spin. The following…
Dave Mosher
3 mins read
NASA just woke up a nuclear-powered probe 1 billion miles beyond Pluto - and it's approaching the farthest object humans have ever tried to visit
Researchers aren't quite sure of Ultima Thule's exact dimensions. Because it's so dark at roughly 4…
Dave Mosher
6 mins read
Is it Planet 9 or Planet X? Scientists spar over what to call the solar system's hypothetical missing world
Stern is an ardent defender of Pluto's planethood. In 2015, shortly after New Horizons flew past Pl…
Dave Mosher
6 mins read
A NASA probe is going to visit Ultima Thule, the farthest object humanity has ever tried to reach, on New Year's Day
Stern, who recently helped write a book titled "Chasing New Horizons: Inside the Epic First Mission…
Dave Mosher
3 mins read
NASA is sending a probe to explore a strange object a billion miles beyond Pluto
Astronomers think 2014 MU69 is about 30 miles across and almost 44 times farther away from the sun …
Meghan Bartels
6 mins read
NASA just pulled off humanity's farthest-ever visit to a space object - the New Horizons probe's successfully flew by Ultima Thule
New Horizons pulled off the maneuver on New Year's Day, taking hundreds of photos in a highly chore…
Dave Mosher,Rebecca Harrington
3 mins read
There may be new evidence of a mysterious 'Planet X' hiding beyond Pluto
If this giant "Planet X" exists, we probably haven't spotted it because it's so far away. At such a…
Kelly Dickerson
3 mins read
There's new evidence that a mysterious 9th planet is lurking in our solar system
They'll be using the Subaru telescope on the summit of Mauna Kea in Hawaii to hunt it down and sea…