Dr. Gurtina Besla -- Dark Matter in the Milky Way

Dr. Gurtina Besla -- Dark Matter in the Milky Way

Most of the mass in the universe is invisible. We call it "Dark Matter", and the only reason we know it's there is because we can see how it gravitationally interacts with regular matter. For example, in our own galaxy, Dark Matter comprises most of the mass, in a large spherical "halo" that binds the smaller spiral of gas and stars that we can see. As all our stars orbit the Milky Way, they are passing through a sea of dark matter, and this should create observable consequences that allow us to test theories about the nature of dark matter itself. Dr. Gurtina Besla develops large-scale computer simulations of the Milky Way to compute these observational signatures, allowing us to put our theories of dark matter to the test inside our own galaxy.

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Jaksot(31)

Dr. Ranadeep Dastidar -- Astrophysics at the Speed of Light

Dr. Ranadeep Dastidar -- Astrophysics at the Speed of Light

The Theory of Relativity was discovered by Einstein over a century ago, and it tells us how time and space are distorted when moving close to the speed of light. We mere earthlings don't get the oppo...

1 Heinä 1h 6min

Dr. Abigail Polin -- Astrophysics Q & A #3

Dr. Abigail Polin -- Astrophysics Q & A #3

Abigail Polin is back, and we are doing another astrophysics Q&A! This time, our questions come from a class of third graders in Indiana. You'll be surprised at how some of the simplest questions ca...

1 Kesä 1h 17min

Dr. Jeff Gerber -- Let's Talk Stars

Dr. Jeff Gerber -- Let's Talk Stars

This episode we get back to the objects that inspired the whole field of astrophysics -- stars. Those little points of light that first inspired us as children are incredible physics laboratories tha...

1 Touko 1h 5min

Dr. Charles Law -- All the Molecules in Protoplanetary Disks

Dr. Charles Law -- All the Molecules in Protoplanetary Disks

Just how much do we know about how the planets formed? How much of this can we learn from getting images of young solar systems? Why does it help to look at the disk using radio waves instead of opt...

1 Huhti 50min

Dr. Daniel Polin -- The Biggest Digital Camera in the World

Dr. Daniel Polin -- The Biggest Digital Camera in the World

The Vera Rubin Observatory has just started taking its first data this month. We have a special guest (Dr. Daniel Polin) who helped in the construction of the camera for Rubin. This digital camera w...

1 Maalis 1h 14min

Dr. Abigail Polin -- Astrophysics Q & A #2

Dr. Abigail Polin -- Astrophysics Q & A #2

What's the deal with black holes?

1 Tammi 1h 23min

Dr. Kaitlin Kratter -- Building a Solar System on the Computer

Dr. Kaitlin Kratter -- Building a Solar System on the Computer

How did our solar system form? More generally, how does any solar system form? We get some of our answers to these questions by looking at newly-forming planetary systems in the first million years ...

1 Joulu 20251h 15min

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