Tyche (planet)
Matese and Daniel Whitmire say that the points of origin for long-period comets gives a pattern that suggests Tyche's existence. They noted that Tyche, if it exists, should be seen in the archive of data that was collected by NASA's Wide-field Infrared Survey Explorer (WISE) Infrared telescope. However, several astronomers disagree that Tyche exists. In 2014 NASA announced that WISE had not found such a planet.