Solar System
Rosetta’s Comet Really “Blows Up” in Latest Images
First off: no, comet 67P/Churyumov-Gerasimenko is not about to explode or disintegrate. But as it steadily gets nearer to the Sun the…
The Solar System’s ‘Yearbook’ is About to Get Filled In
Lined up like familiar faces in your high school yearbook, here are images of the 33 largest objects in the…
How Are Planets Formed?
How did the Solar System's planets come to be? The leading theory is something known as the "protoplanet hypothesis", which…
Dawn Captures Best Images Ever of “Hipster Planet” Ceres
This is the second animation from Dawn this year showing Ceres rotating, and at 43 pixels across the images are officially the…
Is The Moon A Planet?
What makes a planet a planet? The Moon is so big compared to the Earth -- roughly one-quarter our planet's…
Weekly Space Hangout – Jan. 23, 2015: SpaceX, Rosetta, and Asteroid Updates!
Host: Fraser Cain (@fcain) Guests: Morgan Rehnberg (cosmicchatter.org / @MorganRehnberg ) Ramin Skibba (@raminskibba) Dave Dickinson (@astroguyz / www.astroguyz.com) (more…)
Let’s Help Write a New Mnemonic for the Solar System. My Very Excellent Mother…
The current most-used Solar System mnemonic for remembering the planets and their order from the Sun is “My Very Educated…
Get a Change of View of Mercury’s North Pole
It's always good to get a little change of perspective, and with this image we achieve just that: it's a…
Astronomy Cast Ep. 363: Where Did The Earth’s Water Come From?
Where on Earth did our water come from. Well, obviously not from Earth, of course, but from space. But did…
What is the Average Surface Temperature on Venus?
Venus is often referred to as our "sister planet," due to the many geophysical similarities that exist between it Earth.…