You Searched For "Kuiper belt" and got 18 results
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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
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
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
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…
Kelly Dickerson
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
2 mins read
Scientists want to visit a mysterious object beyond Pluto that's a celestial time capsule
PT1 is one of three potential targets NASA liked. It's nearly a billion miles beyond Pluto and is o…
Kelly Dickerson
4 mins read
Astronomers just discovered a 9th planet in our solar system for the first time in nearly 170 years
"You can think of them like different hands on the clock," Mike Brown, an astronomer at the Califor…
Jessica Orwig
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 …
4 mins read
The Pluto flyby is just the start of NASA's epic New Horizons mission
But the flyby wasn't just about taking breathtaking close-ups. Scientific instruments also recorded…
Julia Calderone
2 mins read
We've finally added Pluto to the family portrait of the Solar System
We barely had an idea of what Pluto looked like until New Horizons began closing in …
Kelly Dickerson,Skye Gould
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
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
4 mins read
Thousands of worlds may lurk beyond Pluto - and a stunning new animation shows them all
Pluto, Eris, Ceres, Makemake, Haumea, and five others meet Brown's "near certainty" criteria - in o…
Dave Mosher
4 mins read
NASA just received the critical message that proves its spacecraft reached Pluto after 9 1/2 years
Pluto is the largest object in the Kuiper belt, which is a thick band that wraps around the outer e…
Jessica Orwig
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
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
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…