<P> It also serves as the location of "Tycho City" in Star Trek: First Contact; a lunar metropolis by the 24th century . </P> <P> In the film Can't Buy Me Love, Cindy notices Tycho while looking through a telescope on her final "contractual" date with Ronny in the Airplane Graveyard . </P> <P> In Robert A. Heinlein's book The Moon Is a Harsh Mistress, Tycho is the location of the lunar habitat "Tycho Under". </P> <P> In Jack Williamson's novel Terraforming Earth, the crater is utilized for "Tycho Base", a self - sustaining, robot controlled installation aimed at restoring life to the (dead) planet Earth after an asteroid sterilizes the biosphere . </P>

Big crater on the bottom of the moon