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NOVA scienceNOW: Saving Hubble
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Program Overview
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Scientists
describe the risky, high-stakes repairs on the Hubble Space Telescope scheduled
for fall 2008.
This NOVA scienceNOW segment:
recounts
how the Hubble Space Telescope has revolutionized astrophysics and brought
spectacular views of the universe to the public, making it the best-known
scientific instrument in the world. states
that several of Hubble's instruments no longer work. explains
that a shuttle mission is scheduled to repair the telescope. Two teams of
astronaut spacewalkers will replace batteries, install cameras, and remove old
optics. A crucial job involves repairing the power supply for the main camera. describes
the complex, dangerous repair mission. Much of the repair work is delicate,
akin to surgery. Yet astronauts will be wearing spacesuits and thick gloves and
working in weightless conditions. details
that repairing the main camera involves removing 32 tiny screws that hold a
protective cover plate with edges so sharp that it can cut a spacesuit. If a
spacesuit depressurizes, it would kill the astronaut wearing it. describes
how astronauts practice on a mock Hubble telescope that sits in a huge pool of
water called a neutral buoyancy tank. The tank simulates the repair experience,
enabling astronauts to practice making detailed repairs while wearing bulky
pressurized suits. points
out that no amount of practice will guarantee that the Hubble repairs will be
made effectively or safely. concludes
that the project will likely lead to great discoveries in the future.
Taping Rights: Can be used up to one year after the program is taped off the air.
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