Disprooven This article is about an object the existence of which has been disprooven.
| Nemesis | |
|---|---|
 | |
| Diameter | 300,000 km |
| Mass of Planet | Unknown |
Nemesis is a hypothetical red or brown dwarf star first suggested in 1984 to be orbiting the Sun at ~95 000 au (1.5 light years), which is even farther than the Oort Cloud, the outermost region of the system. Nemesis is supposed to explain a cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years - the theory suggests that over the course of its orbit Nemesis crosses the Oort Cloud sending long period comets to bomb the inner system.
The existence of Nemesis is basically disprooven due to nearly no evidence of our solar system being a binary star system, besides the fact that binary star systems are usually closer to each other, there also are the following arguments:
- With our technology, we would have already definitely found it.
- Nemesis would cause gravitonal disturbances in orbits of existing objects. For example Neptune was found because its disturbing Uranus (i know how that sounded).
- Space probes would also be disturbed, could suddenly change trajectories, etc.
- Kuiper belt/Scattered disc/Oort cloud would have a specific structure made by Nemesis' gravitation