Chapter
Black Holes and Gravitational Waves
2:00:35 - 2:09:29 (08:53)
Black holes accrete gas from their host galaxy and when that happens, they emit bright light visible from Earth. A hundred years after Einstein's theory of gravity, the LIGO Observatory detected gravitational waves which were immediately suggested to be black holes by Ed Salketer and Yakov Zaldovich.
Clips
The singularity of a black hole is still a mystery, and the question of what happens inside is still unanswered.
2:00:35 - 2:04:01 (03:26)
Summary
The singularity of a black hole is still a mystery, and the question of what happens inside is still unanswered. String theorists speculate that testing their theories inside a black hole could provide insights into its singularity, but the dangers of being inside one still pose a significant risk.
ChapterBlack Holes and Gravitational Waves
Episode#154 – Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua
PodcastLex Fridman Podcast
Black holes collect gas from their host galaxies and accrete it, causing the gas to swirl and heat up, shining brightly due to its proximity to the black hole.
2:04:01 - 2:06:24 (02:23)
Summary
Black holes collect gas from their host galaxies and accrete it, causing the gas to swirl and heat up, shining brightly due to its proximity to the black hole. This phenomenon was observed when the universe was only about 7% of its current age.
ChapterBlack Holes and Gravitational Waves
Episode#154 – Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua
PodcastLex Fridman Podcast
In 2015, the LIGO Observatory detected gravitational waves a hundred years after Einstein's theory of gravity, and in 2017, LIGO collaboration announced the discovery of gravitational waves from the collision of two black holes, which was consistent with the prediction made for the space-time around black holes.
2:06:24 - 2:09:29 (03:04)
Summary
In 2015, the LIGO Observatory detected gravitational waves a hundred years after Einstein's theory of gravity, and in 2017, LIGO collaboration announced the discovery of gravitational waves from the collision of two black holes, which was consistent with the prediction made for the space-time around black holes.