The term 'CASSINI AND OTHERS' refers to a group of spacecrafts that were launched by the European Space Agency (ESA) and NASA in the late 1990s and early 2000s. The group includes the Cassini-Huygens mission, which was launched in 1997 and is still active today, as well as the Mars Express, Rosetta, Venus Express, and SMART-1 missions. The OLEGS spacecraft, which has five letters, was part of this group and was launched in 2003. It was designed to study the Earth's magnetosphere and its interaction with the solar wind.