Many red dwarfs are orbited by exoplanets, but large Jupiter-sized planets are comparatively rare. Like planets, electrons orbited a central, sun-like nucleus. Six satellites are planned to be initially orbited. The four giant planets are also orbited by planetary rings of varying size and complexity. Six of the planets are orbited by one or more natural satellites. This was the first evidence that anything other than the planets orbited the Sun. Dawn has also orbited the former dwarf planet Vesta. SELENE orbited the Moon at about altitude. SMART-1 was a technology demonstration mission that orbited the Moon. Like Apollo 8, Apollo 10 orbited the Moon but did not land. The seeds orbited the Moon, but were not landed on it. The Cassini probe orbited Saturn from 2004 to 2017, successfully returning mountains of scientific data. She orbited the Earth in the starship, observing Mar-Vell. The shuttle orbited the Earth twice in 206 minutes of flight. It orbited the Moon for about a year.