Landmark Completion of South Pole Telescope to Help Scientists Learn What the Universe Is Made of and How it Got Here

Just days before nations around the world were set to begin a coordinated global research campaign called the International Polar Year (IPY); scientists at the South Pole aimed a massive new telescope at Jupiter and successfully collected the instrument's first test observations.

Soon, a far more distant quarry will enter the South Pole telescope's (SPT) sights, as a team of researchers from nine institutions tackles fundamental mysteries of modern cosmology and the nature of the universe: What, for example, is dark energy, the force that dominates the universe?

The $19.2 million telescope is funded primarily by the National Science Foundation (NSF), with additional support from the Kavli Foundation of Oxnard, Calif., and the Gordon and Betty Moore Foundation of San Francisco.

"The telescope, camera and optics are all working as designed," said John Carlstrom, the S. Chandrasekhar distinguished service professor in astronomy and astrophysics at the University of Chicago, who heads the SPT team that tested the scope on Feb. 26. "SPT's first light is a major milestone for the project and a fitting conclusion to a remarkably productive summer at the South Pole station. We now look forward to fully characterizing the instrument and beginning cosmological observations."

"First light" is the scientific term for the time when a telescope becomes operational.

The telescope stands 75 feet (22.8 meters) tall, measures 33 feet (10 meters) across and weighs 280 tons (254 metric tons). It was assembled in Kilgore, Texas, then taken apart, shipped across the Pacific Ocean to New Zealand, and flown from there to the South Pole. Since November, the SPT team under the guidance of project manager Steve Padin has worked furiously to reassemble and deploy the telescope.

As with any construction project at the Earth southern extremity, SPT was supported by a long and complex logistical chain stretching around the globe. All cargo to the South Pole is delivered by ski-equipped LC-130 aircraft, and the components must be able to be broken down to fit into the aircraft cargo bay. Flown by the N.Y. Air National Guard, the aircraft are elements of Operation Deep Freeze, the military support arm of the U.S. Antarctic Program, which also includes Air Force cargo jets and U.S. Coast Guard icebreakers, Navy cargo handlers and many other logistical and personnel assets.

Raytheon Polar Services Co, of Centennial, Colo. is NSF's logistics contractor in Antarctica. RPSC personnel played a variety of essential roles in the successful completion of the SPT project, NSF officials noted.

Astrophysicists know that the universe has been expanding since the Big Bang occurred 13.8 billion years ago. In the late 1990s, astronomers using exploding stars as cosmic tape measures discovered that the expansion of the universe is accelerating. This led them to the idea that dark energy pushes the universe apart, overwhelming gravity, the attractive force exerted by all matter in the universe.

"We would like to know what makes the universe evolve," said Stephan Meyer, professor in Astronomy & Astrophysics at the University of Chicago.