Dark Matter Clues From AMS Experiment in Space (Photos)

AMS STS-135 Flyaround View

The Alpha Magnetic Spectrometer experiment seen during the STS-135 flyaround on July 19, 2011. Image was taken aboard space shuttle Atlantis after undocking on STS-135 Flight Day 12.

Don Pettit Swaps AMS Laptop Hard Drive

Astronaut Don Pettit swaps the Alpha Magnetic Spectrometer's laptop hard drive aboard the International Space Station, February 3, 2012.

AMS Soyuz Window View 30S Undock

The Alpha Magnetic Spectrometer experiment hangs on the side of the International Space Station, as seen from the window of a Soyuz spacecraft, May 3, 2012.

AMS Post-Install During STS-134 Mission

The Alpha Magnetic Spectrometer experiment and an astronaut are seen in a reflected self-portrait outside the International Space Station, May 3, 2012.

AMS On-Orbit Image, June 29, 2012

The Alpha Magnetic Spectrometer experiment hangs on the side of the International Space Station, June 29, 2012.