Solar System

The Moons of Uranus Are Fascinating Enough On Their Own That We Should Send a Flagship Mission Out There

What’s the most interesting fact you know about Uranus? The fact that its rotational axis is completely out of line…

1 week ago

The Moon Might Be More Metal-Rich Than We Thought

A new study shows that the Moon is more metal-rich than previously thought. That has some far-reaching implications for our…

4 weeks ago

Another Collection of Newly Forming Planetary Systems. This Time from the Gemini Planet Imager

Over the next decade, several very powerful telescopes will come online. Observing time on these 'scopes will be in high…

1 month ago

New Pictures of Phobos, Seen in the Infrared

NASA's Mars Odyssey Orbiter doesn't get a lot of headlines lately. It was sent to Mars in 2001, to detect…

2 months ago

Interstellar Oumuamua Was a Dark Hydrogen Iceberg

When Canadian astronomer Robert Weryk discovered `Oumuamua passing through our Solar System with the Pan-STARRS telescope, in October 2017, it…

2 months ago

Evidence that Mars Used to Have a Ring

Mars only has two moons: Phobos and Deimos. They're strange, for moons, little more than lumpy, potato-shaped chunks of rock.…

2 months ago

Maybe the Elusive Planet 9 Doesn’t Exist After All

Oh Planet Nine, when will you stop toying with us? Whether you call it Planet Nine, Planet X, the Perturber,…

2 months ago

The Solar System Might Not Exist if There Wasn’t a Huge Galactic Collision with the Milky Way Billions of Years Ago

The Milky Way has a number of satellite galaxies; nearly 60 of them, depedending on how we define them. One…

2 months ago

A Cool Idea to Catch Up With an Interstellar Visitor

Poor, dim-witted humanity. We used to think we were the center of everything. That wasn't that long ago, and even…

3 months ago

Interstellar Comet 2I/Borisov Appears to Have Broken in Half

In 2019, amateur astronomer Gennadiy Borisov discovered a comet, which now bears his name. There's a long history of amateur…

4 months ago