Solar System

Check Out How Big the Planets and the Moon Will be in Our Sky Over the Next Two Years

Everything in space is moving. Galaxies collide and merge, massive clouds of gas migrate, and asteroids, comets, and rogue planets…

1 day ago

Sunrises Across the Solar System

Scientists have learned a lot about the atmospheres on various worlds in our Solar System simply from planetary sunrises or…

2 days ago

Jupiter Probably Has 600 Small, Irregular Moons

The better our technologies get, the better we get at finding objects in space. That's certainly true of Jupiter and…

1 week ago

This is What the Solar System Really Looks Like

At first glance, it looks like something from an alien autopsy. A strange organ cut from a xenomorph's thorax, under…

1 month ago

A Group of Meteorites All Came From a Destroyed Planetesimal With a Magnetic Core

Before our Solar System had planets, it had planetesimals. Scientists think that most of the meteorites that have struck Earth…

2 months ago

If Planet 9 is a Primordial Black Hole, We Might Be Able to See Flares When it Consumes Comets

A comet-eating black hole the size of a planet? It's possible. And if there's one out there in the distant…

2 months ago

Pluto and Other Kuiper Belt Objects Started Out With Water Oceans, and Have Been Slowly Freezing Solid for Billions of Years

It seems unlikely that an ocean could persist on a world that never gets closer than 30 astronomical units from…

3 months ago

NASA Thinks it’s Time to Return to Neptune With its Trident Mission

Is it time to head back to Neptune and its moon Triton? It might be. After all, we have some…

3 months 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…

3 months ago

Titan is Drifting Away from Saturn Surprisingly Quickly

Where did Saturn's bizarro-moon Titan form? Did it form where it is now, or has it migrated? We have decades…

3 months ago