AST-1A Lecture Notes - Lecture 23: Earth Mass, Terrestrial Planet, Telepathy
Document Summary
About 6% of all sun like stars appear to have these massive planets around them. The planets have masses of 0. 4 to 17 times that of jupiter. Typically they orbit their stars at distances of 0. 07 to 3 au. The origin of these hot jupiters is a mystery. Either they formed this close to their parent star, in which case we need to radically revise the way we think planets form around stars, or. The planets formed in the outer solar system, but migrated inward through disk. Came in because of gravitational encounters with other planets. It is important to note that the technique used to discover these planets favors the discovery of massive planets with short periods. Astronomers developed other techniques for searching for terrestrial planets. Transiting planets-the passage of a smaller celestial body or its shadow across the disk of a larger celestial body.
