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Kuiper Belt

The Expanse Asteroid Belt screenshot

Bizarre Asteroid Belt Object Could Contain Water From the Birth of the Solar System

Every time we make a category, something comes along to break it.
By Cassidy Ward 4 months ago
Dark Encounter

A new tool in the hunt for the elusive, and possibly fictional, 'Planet Nine'

If you're not careful, your moons might give you away.
By Cassidy Ward 7 months ago
The Ark spacecraft

Dwarf planet Quaoar has a ring system that defies our understanding of gravity

The ring is further away from the planet than gravity should allow.
By Cassidy Ward 7 months ago

Almost 4.7 billion miles from the Sun, there is more on the horizon for the New Horizons mission

By Elizabeth Rayne 2 years ago
distant space

Farfarout is now literally the most far-out object in the solar system

By Elizabeth Rayne 2 years ago
A color image of Arrokoth shows it is very red and smooth. The biggest crater, Maryland, can be seen on the small lobe. Credit: ASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

How to build a Kuiper Belt Object: Arrokoth's two halves formed separately and slowly came together

By Phil Plait 3 years ago
Arrokoth Hero

NASA officially gives Ultima Thule a fitting new Native American name

By Jeff Spry 3 years ago
Artwork depicting a Kuiper Belt Object far beyond Neptune. Credit: ASA/ESA/G. Bacon (STScI)

Where do the big moons of big Kuiper Belt Objects come from?

By Phil Plait 4 years ago
Artwork depicting the Kuiper Belt Object (225088) 2007 OR10, the largest object in the solar system that still has not been named. Credit: Alex Parker via 2007or10.name

Help astronomers name a Trans-Neptunian Object! (225088) 2007 OR10 just doesn't cut it

By Phil Plait 4 years ago
The highest resolution image of the Kuiper Belt Object 2014 MU69, taken by the New Horizons spacecraft minutes before closest encounter in 2019. Credit: NASA/Johns Hopkins Applied Physics Laboratory/Southwest Research Institute, National Optical Astronomy

Here it is: The most detailed full image of MU69 from New Horizons we'll ever see.

By Phil Plait 4 years ago
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