Planet Nine
A hypothetical new planet with about 10 times the mass of Earth, whose existence is postulated due to the regular orbits of Trans-Neptunian Objects, with its likely orbit crossing the Dark Energy Survey's footprint.
Videos Mentioning Planet Nine
Avi Loeb: Aliens, Black Holes, and the Mystery of the Oumuamua | Lex Fridman Podcast #154
Lex Fridman
A hypothetical planet in the outer solar system whose existence is suggested by anomalies, which could potentially be a black hole.
Konstantin Batygin: Planet 9 and the Edge of Our Solar System | Lex Fridman Podcast #201
Lex Fridman
A hypothesized object in the outer solar system, beyond Neptune, believed to orbit the sun every 10,000 years and be about five Earth masses. Its existence is inferred from gravitational effects on distant Kuiper Belt objects.
"Probing the Dark Universe" - A Lecture by Dr. Josh Frieman
Fermilab
A hypothetical new planet with about 10 times the mass of Earth, whose existence is postulated due to the regular orbits of Trans-Neptunian Objects, with its likely orbit crossing the Dark Energy Survey's footprint.
David Kipping: Alien Civilizations and Habitable Worlds | Lex Fridman Podcast #355
Lex Fridman
A hypothetical planet in the outer solar system, beyond the Kuiper Belt, which is difficult to detect due to its vast distance and faint reflection of sunlight.