astronomy cast Archives - Page 36 of 118

Aug 13th: How Old is the Universe?

by Astronomy Cast | Aug 13, 2018 | Astronomy Cast

This week we look at age of the Universe. How old is the Universe, and how do we know?

Aug 6th: Magnetism Everywhere

by Astronomy Cast | Aug 6, 2018 | Astronomy Cast

Magnetic fields are everywhere and we’re talking about the gigantic magnetic fields that surround planets, stars, galaxies and some of the most exotic objects in the Universe.

Jul 30th: Gravitational Lensing

by Astronomy Cast | Jul 30, 2018 | Astronomy Cast

The most powerful telescopes in the Universe are completely natural, and the size of a galaxy cluster. When you use the gravity of a galaxy as a lens, you can peer right back to the edges of the observable Universe.

Jul 16th: Tidal Forces Across the Universe

by Astronomy Cast | Jul 16, 2018 | Astronomy Cast

Time to expand our view and encompass the entire universe. Some of the most dramatic events originate from tidal forces caused by gravity: other worlds, galaxies, black holes and even entire clusters of galaxies are under this influence.

Jul 9th: Dwarf Galaxy Update

by Astronomy Cast | Jul 9, 2018 | Astronomy Cast

The Milky Way has gobbled up dozens of dwarf galaxies and added them to its structure. Today we’re going to look at the ongoing hunt for the wreckage of past mergers. And what we’ve discovered about dwarf galaxies in general.

Jul 2nd: Update on Globular Clusters

by Astronomy Cast | Jul 2, 2018 | Astronomy Cast

Is it globular clusters or is it globeular clusters? It doesn’t matter, they’re awesome and we’re here to update you on them.

Jun 25th: Update on Stellar Populations (I, II, & III)

by Astronomy Cast | Jun 25, 2018 | Astronomy Cast

Another update show, this time on the various generations of stars, let’s get into it.

Jun 18th: Update on Asteroids & Prospects of Asteroid Mining

by Astronomy Cast | Jun 18, 2018 | Astronomy Cast

There are several companies working on missions and techniques to harvest minerals from asteroids. What other resources are out there that we can use?

Jun 11th: Icy Moons Update 2018

by Astronomy Cast | Jun 11, 2018 | Astronomy Cast

Thanks to Cassini and other spacecraft, we’ve learned a tremendous amount about the icy worlds in the Solar System, from Jupiter’s Europa to Saturn’s Enceladus, to Pluto’s Charon. Geysers, food for bacteria, potential oceans under the ice and more. What new things have we learned about these places?