Gagarin

The Gagarin is a spaceship owned by the Eligius Corporation which originated from Earth. It transported prisoners from Earth's Asteroid Belt mining colony to Earth. The people in the ship are from before the first Nuclear Apocalypse.

History
In Praimfaya, six years and seven days after Praimfaya, a ship descends down on Earth's surface. It was seemingly involved with the mining of asteroids and the transportation of humans to and from the Asteroid Belt. It was, at first, misinterpreted by Clarke Griffin to be the ship carrying Bellamy and the others back to Earth.

Season Four
In Praimfaya, the Gagarin lands on Earth, carrying prisoners from Cell Block B. This was witnessed by Clarke and Madi.

Notes and Trivia

 * The name "Gagarin" could derive from the first man in space, Yuri Gagarin.
 * Jason Rothenberg described the Gagarin ship to be full of "angry" prisoners, who will pose (at least at first) a huge threat to the bunker survivors, Clarke and Madi and the Ark crew.
 * The prisoners onboard the ship include: Charmaine Diyoza, a former military strategist; Robert McCreary, an enforcer from a powerful crime syndicate; and Vinson, a serial killer.