(HOUSTON) -- Space shuttle Discovery will undock from the International Space Station Monday for the last time as it prepares to make its descent back to Earth.
The space shuttle is scheduled to undock from the space station at 7:00 a.m. EST. It will then conduct a full-lap fly-around of the space station before finally separating from it at 8:43 a.m.
On Wednesday, Discovery is scheduled to make its final flight back to Earth, touching ground just before noon. Once grounded, the space shuttle will eventually head to a museum.
Earlier on Monday, Astronauts on board woke at 3:23 a.m. to the theme from Star Trek, with a personalized message from William Shatner, who played Capt. James T. Kirk on the TV series.
Replacing the show's original introduction, Shatner told Discovery crew members, “Space, the final frontier. These have been the voyages of the Space Shuttle Discovery. Her 30-year mission: To seek out new science. To build new outposts. To bring nations together on the final frontier. To boldly go, and do, what no spacecraft has done before.”
The theme from Star Trek was chosen as the crew's wake-up song after receiving the second most votes in a public contest held by NASA to select the astronauts' wake-up tunes.
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