Seismology. A chance to peer into our planet & learn how it works. And we’re about to take that technology to Mars. @astronomycast at #365DaysOfAstro
Nov 12th: Seismology
Author Archive | Astronomy Cast
Nov 5th: Radar, Lidar & Sonar
To really study something you want to reach out and touch it. But what can you do if you’re separated by huge distance. You reach out with electromagnetic or sound waves and watch how they bounce back. Thanks to radar, sonar and lidar.
Oct 29th: Gravity Mapping
Scientists manage to map a highly detailed gravity map of our planet. And it turns out, this is very useful for other worlds too.
Oct 22nd: No Touching: Determining Composition of Worlds Remotely
How do we know what planets lights years away have in their atmosphere? What about the rocks all around Curiosity?
Oct 15th: What Is The Shape Of The Universe?
Some of the biggest questions in the universe depend on its shape. Is it curved? Is it flat? Is it open?
Oct 8th: Water Worlds Revisited
Good news! There are hundreds if not thousands of times more of them than worlds like Earth. Bad news? They’re locked in ice.
Oct 1st: Lagrange Points
Gravity is always pulling you down, but there are places in the solar system where gravity balances out. These are called Lagrange points and space agencies use them as stable places to put spacecraft
Sep 24th: Rockets
To move around in space, you need some kind of propulsion system. And for now, that means rockets. Let’s learn the underlying science of rockets, and how they work.