Solar System

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…

4 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.…

4 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,…

4 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…

4 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…

5 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…

6 months ago

The heliosphere looks a lot weirder than we originally thought

Every second of every day, our sun spits out a stream of tiny high-energy particles, known as the solar wind.…

6 months ago

New Study Shows the Earth and Moon are not so Similar After All

A new study shows that Earth and the Moon are not as similar as we thought, which helps resolve a…

7 months ago

An Asteroid has been Found that Orbits the Sun Closer than Venus

Astronomers at Caltech's Zwicky Transient Facility (ZTF) have discovered an asteroid that orbits inside Venus. Though other asteroids have a…

9 months ago

Satellites Watched Mercury’s Transit From Space, Confirming That Yes, the Sun Has At Least One Planet

Do you wonder how astronomers find all those exoplanets orbiting stars in distant solar systems? Mostly they use the transit…

11 months ago