British-built Mars lander, launched by the European Space Agency in 2003 on the Mars Express spacecraft. Designed to investigate the possibilities of water and life at the landing site of Isidis Planita.
1) A chat room on AOL frequented by a contant group of people since ~1998-9
2) (Anirpgers): Group of people who frequent chat room in definition 1
3) Animorphs RPG: original title of chat room in definition 1
"Are you going to anirpg, tonight?"
"I don't really think they're an anirpger."
Spacecraft sent to Mars that land and have the ability to move from their original site. Currently referring to Spirit and Opportunity, which were launched in 2003. Part of an ongoing program began in the mid 1990's that is currently planned out to around 2009.