
The asteroid redirect vehicle demonstrates the “gravity tractor” planetary defense technique on a hazardous-size asteroid. The gravity tractor method leverages…

Once the boulder is secured, the ARV will mechanically push off, or “hop,” from the surface and then use thrusters…

Close-up of the Asteroid Redirect Vehicledeparting the asteroid after capturing a boulder from its surface.

201503210023hq (03/21/2015) — Expedition 43 NASA Astronaut Scott Kelly takes part in the spin chair training during media day, Saturday,…

201503230003hq (03/23/2015) — Expedition 43 NASA Astronaut Scott Kelly waits to climb the scaffolding to access the Soyuz TMA-16M spacecraft…

201503230020hq (03/23/2015) — Expedition 43 Russian Cosmonauts Mikhail Kornienko, left, and Gennady Padalka, of the Russian Federal Space Agency (Roscosmos),…

201503210030hq (03/21/2015) — Expedition 43 prime crew members: NASA Astronaut Scott Kelly, and Russian Cosmonauts Gennady Padalka, and Mikhail Kornienko…

201503210031hq (03/21/2015) — Expedition 43 NASA Astronaut Scott Kelly waters a tree planted in his honor during media day, Saturday,…

201503210035hq (03/21/2015) — Expedition 43 NASA Astronaut Scott Kelly, left, Russian Cosmonauts Gennady Padalka, center, and Mikhail Kornienko of the…

201503230021hq (03/23/2015) — Expedition 43 prime crew: NASA Astronaut Scott Kelly, seated left, and Russian Cosmonauts Gennady Padalka, and Mikhail…