It’s a galaxy-eat-galaxy Universe out there. Today we’re talking about how big galaxies eat little galaxies, and looking at the fabulous arcs of stars stripped and tossed across the dark sky. Our guest today is Dr. Robyn Sanderson, who looks at these tidal tails, and uses them to understand everything from galactic formation to dark matter.
Gamma ray bursts are some of the most powerful explosions we know of, ones that we can literally see from across the Universe. But they are extremely short – lasting only a few milliseconds to a few minutes. What could cause such an explosion? Today, Dr. Rodolfo Barniol Duran, a theoretical astrophysicist at Purdue, talks […]