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Astronomy Cast

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Mar 28, 2022

Astronomy Cast Ep. 636: Blowing Bubbles

by Fraser Cain & Dr. Pamela Gay

We think of space as a vacuum, but there are regions of different density. There are winds blowing from stars and other objects that clear out vast bubbles in space, and look absolutely fantastic in pictures. And they might have been critical for...

Mar 21, 2022

Astronomy Cast Ep. 635: Jets: When Magnetic Fields Fling Things

by Fraser Cain & Dr. Pamela Gay

As astronomers look out across the Universe. They see various objects spewing jets of material light years into space. What causes these jets? And what impact do they have on the Universe?

Mar 14, 2022

Astronomy Cast Ep. 634: Milky Way’s Mergers & Acquisitions

by Fraser Cain & Dr. Pamela Gay

The Milky Way is a vast grand spiral today, but how did it get this way? Astronomers are starting to unravel the history of our galaxy, revealing the ancient collisions with dwarf galaxies, and how they came together to build...

Mar 7, 2022

Astronomy Cast Ep. 633: Weirdly Habitable Places

by Fraser Cain & Dr. Pamela Gay

We've always assumed that habitable planets would need to be like Earth; a terrestrial planet orbiting a sunlike star. But now astronomers have been discovering planets in the habitable zone around very much non-sunlike stars. What...