The Mystery of Black Holes: What They Are and How They're Detected
TLDR Black holes are formed when a star collapses upon itself, creating a super compressed core with a gravitational field so strong that nothing, not even light, can escape. They can be detected through mass estimates, gravity lensing, and the detection of emitted radiation such as x-rays and gamma rays.
Timestamped Summary
00:00
Black holes are invisible and may not even exist because we can't detect them with our senses.
04:12
Black holes are formed when a star collapses upon itself, creating a super compressed core with a gravitational field so strong that nothing, not even light, can escape.
08:16
Black holes are formed when a star collapses upon itself, creating a super compressed core with a gravitational field so strong that nothing, not even light, can escape, and they have the ability to bend space and time.
12:14
The event horizon of a black hole has a radius called the Schwartzchild radius, named after Carl Schwartzchild, and if the Earth were to become a black hole, it would shrink down to the size of a marble.
16:04
The different types of black holes include the non-rotating Schwartzchild type and the rotating Kerr or Kerr Newman type, with the latter having an ergo sphere and a static limit.
20:07
Black holes can be detected through mass estimates, gravity lensing, and the detection of emitted radiation such as x-rays and gamma rays.
24:15
Black holes slowly evaporate over time and emit their energy back into the universe, their size can range from six miles to the size of our entire solar system, and the singularity at the center of a black hole is still a mystery in terms of its composition and how it interacts with quantum mechanics and gravity.
28:05
The conversation veers off into a discussion about a science fiction book and a movie, and then transitions into an ad for a virtual receptionist company.
31:55
The episode ends with ads for a virtual receptionist company, a travel company, and a Toyota car.
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Society & Culture