orbits
New Research Could Help Resolve the “Three-Body Problem”
Perhaps you've heard of the popular Netflix show and the science fiction novel on which it is based, The Three-Body…
New Evidence for Our Solar System’s Ghost: Planet Nine
Does another undetected planet languish in our Solar System's distant reaches? Does it follow a distant orbit around the Sun…
NASA’s New Asteroid Impact Monitoring System Comes Online
An asteroid striking Earth is a genuine possibility. There are tens of thousands of asteroids classified as Near-Earth Asteroids (NEAs),…
The Lunar Gateway Will be in a “Near-Rectilinear Halo Orbit”
After months of discussion, the space agencies behind the Lunar Gateway have decided how the space station will orbit the…
Astronomy Cast Ep. 409: Spin in the Solar System
The Solar System is a spinny place. Everything’s turning turning. But if you look closely, there are some pretty strange…
This is a Scale Model of the Solar System Like You’ve Never Seen Before
We've all seen illustrations of the Solar System. They're in our school textbooks, on posters, on websites, on t-shirts... in…
How Long Does It Take to Get to Pluto?
It's a long way out to the dwarf planet Pluto. So, just how fast could we get there? Pluto, the…
Could There Be Another Planet Behind the Sun?
If you've read your share of sci-fi, and I know you have, you've read stories about another Earth-sized planet orbiting…
Is Our Solar System Weird?
Is our Solar System normal? Or is it weird? How does the Solar System fit within the strange star systems…
Here’s the Latest Kepler Orrery Video: the Orbits of the Planets Go ‘Round and ‘Round
If you've ever wanted to know what 3,538 exoplanets look like spinning around their stars, here you go! This is…