Ologies with Alie Ward Cosmology (THE UNIVERSE) Part 2 Encore with Katie Mack
Sep 12, 2023
Astrophysicist Katie Mack discusses cosmic vertigo, vacuum decay, asteroid impact threats, and the fate of the universe. They also touch on reducing light pollution, the shape of the universe, and express gratitude towards individuals involved in the podcast.
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Cosmic Vertigo Explained
- Cosmic vertigo or panic about the vastness of the universe is called Cosmic Brudigo or Cosmophobia.
- The universe's vast events, like black holes colliding and accelerating expansion, often trigger this feeling.
Seeing the Big Bang's Afterglow
- We see the Big Bang's primordial fireball as cosmic microwave background radiation from 380,000 years after the start.
- This observation reveals the hot, dense beginning state of the universe still visible today.
Vacuum Decay: Universe's End?
- Vacuum decay is a quantum event that may cause a bubble of death expanding at light speed, effectively ending the universe.
- It's improbable and unnoticeable, with no warning before occurrence.