Chapter
The Unanswered Questions of Dark Energy
1:41:10 - 1:52:17 (11:07)
The concept of dark energy is still an unsolved puzzle for scientists around the world despite various theories. The possibility of a multiverse outside our universe has been predicted as a plausible theory for the existence of dark energy.
Clips
Two ideas that have been proposed in the study of cosmology include what happened before the big bang and the possibility of multiple universes.
1:41:10 - 1:43:52 (02:42)
Summary
Two ideas that have been proposed in the study of cosmology include what happened before the big bang and the possibility of multiple universes. While they are hypotheses, they are not unreasonable and are rooted in testable physics.
ChapterThe Unanswered Questions of Dark Energy
Episode#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
PodcastLex Fridman Podcast
The stuff of the universe has a positive energy, but there's a negative gravitational energy associated with it.
1:43:52 - 1:46:22 (02:29)
Summary
The stuff of the universe has a positive energy, but there's a negative gravitational energy associated with it. Some scientists are working hard to figure out a way to test the presence of these universes.
ChapterThe Unanswered Questions of Dark Energy
Episode#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
PodcastLex Fridman Podcast
Using multiple independent techniques to confirm scientific discoveries brings credibility, as opposed to solely relying on one technique.
1:46:22 - 1:52:17 (05:55)
Summary
Using multiple independent techniques to confirm scientific discoveries brings credibility, as opposed to solely relying on one technique. Examples are given such as the discovery of the accelerating expansion of the universe and the Higgs particle.