The user creates an account. Their password is hashed and stored in the database. At no point is the plain-text (unencrypted) password ever written to the hard drive. When the user attempts to login, the hash of the password they entered is checked against the hash of their real password (retrieved from the database).
List of International Space Station expeditions. This is a chronological list of expeditions to the International Space Station (ISS). All permanent ISS crews are named Expedition n, where n is sequentially increased with each expedition. Resupply mission crews and space tourists are excluded (see List of human spaceflights to the ISS for details). ISS commanders are listed in italics.
The first one-year mission to the ISS will take place in 2015. One of the astronauts, Scott Kelly, has a twin, Mark, who will remain on Earth. The brothers have volunteered to be guinea pigs to look at effects on Scott Kelly's body in weightlessness in comparison to Mark Kelly's body on Earth.