Hunt for Dark Matter
New detectors may finally reveal dark-matter particles.
The advanced thin ionization calorimeter (ATIC), a balloon-borne instrument, is used to detect bursts of cosmic rays that may be evidence of annihilating collisions between dark-matter particles. ATIC is flown at McMurdo Station on Ross Island in Antarctica, where summer wind patterns carry the detector on a long flight around the South Pole. Here, workers prepare the balloon for takeoff at McMurdo in 2005.
Video: Watch an MIT physicist explain dark matter.