Prompt Cast
The Unsolved Mysteries of Dark Energy and Dark Matter
TLDR Dark matter and dark energy are two of the biggest mysteries in physics today. Scientists have evidence for their existence, but their true nature and origin remain unknown, leaving major questions unanswered.
Timestamped Summary
00:00
Scientists have been unable to solve certain questions, such as those regarding Dark Energy and Dark Matter.
01:27
Dark matter is the biggest outstanding mystery in physics today, and the real question is how do we even know that such a thing exists.
02:52
Stars orbiting around the center of a galaxy do not behave like planets orbiting around a star, as they are going faster than they should be, indicating the presence of something called dark matter.
04:15
The evidence for the existence of dark matter, which makes up about 85% of all matter, includes gravitational lensing, cosmic microwave background radiation, and the formation of galactic clusters, and one theory is that it could be weakly interactive massive particles like neutrinos.
05:38
Dark matter could potentially be gravitons, axions, or machos, but it is also possible that our understanding of gravity is incorrect.
06:57
Dark energy is a mysterious force that is causing the expansion of the universe to accelerate, but its true nature and origin remain unknown.
08:17
Over 95% of our universe consists of matter or energy that we can't observe, and while progress has been made in determining what dark matter and dark energy are not, there are still major mysteries that science hasn't figured out.
