Oort Cloud

Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua | Lex Fridman Podcast #154

Lex Fridman

The outermost edge of the solar system, a cloud of icy rocks left over from formation, whose overlapping nature makes tracing objects difficult.

Konstantin Batygin: Planet 9 and the Edge of Our Solar System | Lex Fridman Podcast #201

Lex Fridman

An almost spherical structure of icy bodies encircling the sun, extending roughly halfway to the next star, from which long-period comets originate due to galactic tidal interactions.

Rob Reid: The Existential Threat of Engineered Viruses and Lab Leaks | Lex Fridman Podcast #193

Lex Fridman

A theoretical cloud of icy planetesimals surrounding the Sun, mentioned as a potential intermediate step for interstellar travel.

"Probing the Dark Universe" - A Lecture by Dr. Josh Frieman

Fermilab

A hypothetical vast cloud of icy planetesimals at the outermost reaches of the solar system.

Lisa Randall: Dark Matter, Theoretical Physics, and Extinction Events | Lex Fridman Podcast #403

Lex Fridman

Nathalie Cabrol: Search for Alien Life | Lex Fridman Podcast #348

Lex Fridman

A theoretical cloud of icy planetesimals surrounding the Sun, a source of comets that can be ejected towards inner solar system planets by gravitational interactions in dense galactic regions.