The mysterious monolith designated as TMA-2 (incorrectly named after TMA-1, the monolith discovered on the Moon) is found orbiting Jupiter near Io. This is the main destination of both the failed Discovery One mission in 2001 and the joint US-Soviet Alexei Leonov mission in 2010. The monolith mysteriously disappeared 2-15 days before Jupiter became a star known as Lucifer
In the 2010: Odyssey Two (novel), TMA-2 was also nicknamed as "Big Brother" and "Zagadka"
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