Galaxy Quenching | Radiolab Podcast
From Radiolab
The topic explores the various ways galaxies can "die" or "quench," primarily by preventing star formation due to the lack of cold, dense gas, which is essential for creating stars. Key mechanisms include the influence of supermassive black holes that can heat or expel gas from the galaxy, leading to starvation and strangulation of star formation processes.
Key Takeaways
- Galaxies 'die' by star formation shutdown—think cosmic starvation, where cold gas is their fuel.
- Supermassive black holes are the cosmic culprits, heating or ejecting gas necessary for star creation.
- Eight scientifically accepted ways galaxies can 'die'—a cosmic drama with more plot twists than a soap opera.
- Charity Woodrum’s journey from rural Oregon to studying galaxy death reflects resilience amid personal chaos.
- Every galaxy's demise is a reminder: the universe's expansion isn’t just thrilling; it’s also a cautionary tale.
Mentioned in This Episode
- Lula Miller (person)
- Charity Woodrum (person)
- Hubble Deep Field (concept)
- Space, Hope and Charity (media)
- Claire Reilly-Roe (person)
- Michael Woodrum (person)
- Carl Sagan (person)
- Stephen Hawking (person)
- Gina Vivona (person)