Moon



"Take one last look at your precious human Moon, because it cannot help you now!"

- Wheatley

Earth's Moon (often referred to as simply The Moon or Luna) is Earth's only natural satellite, and the setting of the final sequence of Portal 2. It is also the latest known inhabitance of Wheatley.

History
At some point in the late 1970s or early 1980s, Cave Johnson, CEO of Aperture Science, somehow managed to acquire roughly $70 million worth of moon rock. Upon liquefying it, he discovered two things, one being that it made A "damn good" portal conductor, and the other that ground moon rock was "pure poison", and put it to use in testing, under the name Conversion Gel.

Several decades later, when Wheatley had taken over the Aperture Science Enrichment Center and allowed it to fall into serious disrepair, the ceiling fell off his chamber and exposed it to moonlight. Chell took advantage of this, and the moon's portal conducive properties, and shot a portal at the moon, causing both herself and Wheatley to be sucked into the near-total vacuum of the moon's atmosphere. Chell was returned to Earth when GLaDOS, newly restored to power, pulled her back in through the portal. Wheatley, however, was left to orbit the moon indefinitely, along with a corrupt Personality Core.

Trivia

 * The moon has gravity approximately 1/6 of Earth's gravity, meaning that an object on its surface would remain on the surface unless acted upon, but the force needed is much less than that of Earth. Due to the bi-directional teleportation nature of the portal Chell launched to the moon, Wheatley and Chell were both blown away from the surface by the negative pressure vaccuum resulting.
 * Even if Chell places the orange portal on the Moon, it is seen as blue when she gets to its surface.
 * During the end sequence of Portal 2, an Apollo base can be seen. The Apollo missions are known as the only missions when man landed on moon until the Seven Hour War.
 * The Earth looks similar to what our Earth looks like today, despite the draining of the world's oceans by the Combine as seen in Half-Life 2. This suggests that within the 300 years between the events of Half-Life 2 and Portal 2, either the Combine has been overthrown or the oceans were somehow restored.
 * It is unknown how the Moon could be seen from Wheatley's chamber. The end credits show that the Enrichment Center's location is hidden deep underground underneath a shed. However, given the modular and internally mobile nature of the Enrichment Center, it is possible that Wheatley moved the chamber closer to the surface and that GLaDOS moved it back deeper underground while Chell was unconscious.

Appearances

 * Half-Life 2 (seen from Earth)
 * Portal 2