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.
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.
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.
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.
Another update show, this time on the various generations of stars, let’s get into it.
There are several companies working on missions and techniques to harvest minerals from asteroids. What other resources are out there that we can use?
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?
If there’s one place we’ve learned more about in the last 10 years, it’s Mars. What have we learned about Elon Musk’s future home?
Since we started Astronomy Cast we’ve visited many smaller objects in the Solar System up close, from Ceres and Vesta to Pluto, not to mention a comet. What have we learned? more
Finally, a big update. Have there been news in the realm of exoplanets?