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South Pole scientists Tom Crawford and Jeff McMahon take us on a virtual tour of the South Pole Station, then discuss working in the polar environment.

A year and a half after entering Saturn's orbit, the Cassini spacecraft continued to gather exciting new information. Dr. Paul Doherty and Dr. Eric Weygren bring us up to date on the Cassini Mission and show stunning images of Saturn and its ever-growing assortment of moons.

Searching for extraterrestrial life: is it telephoning aliens or really complicated math equations? Join Senior Scientist Paul Doherty, NASA Ames planetary Scientist Eric Wegryn, and SETI's Senior Scientist Seth Shostak as they explore how to find planets that could support life. How many of these planets are there? How did we find them? When will we know for sure?

Take a look inside a comet! Launched on Jan. 12, 2005, the Deep Impact spacecraft hurtled through space on a collision course with an enormous comet. Join senior scientist Paul Dougherty as he explores this exciting mission.

Exploratorium staff Ron Hipschman and Robyn Higdon sum up the last five days of spacewalks, and show a couple of good-bye conferences with the shuttle astronauts.

The Advanced Camera for Surveys (ACS) was successfully installed. In preparation for the installation of the NICMOS Cooling System tomorrow, the astronauts also installed the Electronics Support Module. We also talk with Massimo Stiavelli, a scientist at the Space Telescope Science Institute about his involvement with the ACS and the future Wide Field Planetary Camera 3 (WFPC3) scheduled to be installed during the next servicing mission in 2004.

Learn about the successful replacement of the Power Control Unit (PCU) and listen as we talk with Mark Clampin, part of the team that developed the Advanced Camera for Surveys scheduled for installation tonight.

We learn about Hubble's new solar arrays, and Dr. Bruce Margon talks about the future of Hubble and about the Next Generation Telescope, which will eventually replace Hubble.

In an exclusive taped interview, Hubble payload commander and astronaut John Grunsfeld discusses how astronauts who'll be servicing a telescope in space train in a giant pool at the Johnson Space Center. We'll also show an interview with space engineer Amy Ross, filmed in the space suit laboratory at Johnson.

Fresh from the launch viewing area at Kennedy Space Center, Ron Hipschman shows images and recounts what it’s like to watch at shuttle launch from three miles away. We also preview the mission and the tasks the astronauts will be doing during their five planned space walks.