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Ultimate Guide to Submarines: Nuclear Power Channel: Discovery Channel Length: 143 Date: February 15, 2007 Learn about the first nuclear-powered submarines.

Deep Salvage: Salvage Plan B Channel: Discovery Channel Length: 121 Date: February 15, 2007 Japanese and American divers attempt to retrieve loved ones from a shipwreck.

Deep Salvage: Drilling Attempts Fail Channel: Discovery Channel Length: 86 Date: February 15, 2007 Divers attempt to drill into the Ehime Maru shipwreck.

Ultimate Guide to Submarines: Sonar Channel: Discovery Channel Length: 112 Date: February 15, 2007 Find out how sonar works on a submarine.

Ultimate Guide to Submarines: Dive! Channel: Discovery Channel Length: 177 Date: February 15, 2007 Find out how a submarine dives and resurfaces.

Spacewalkers: Space Suits Channel: Discovery Channel Length: 96 Date: February 15, 2007 Explore the space suits used during space walks.

Spacewalkers: Testing Early Space Suits Channel: Discovery Channel Length: 151 Date: February 15, 2007 Scientists and engineers test space suits.

Spacewalkers: Hubble Spacewalks Channel: Discovery Channel Length: 156 Date: February 15, 2007 See how space walkers repaired the Hubble Space Telescope.

Space Colonies: Spreading Intelligence Channel: Discovery Channel Length: 64 Date: February 15, 2007 Dr. Christopher McKay believes it is our duty as intelligent beings to spread life to other planets.

Space Colonies: Life on Mars Channel: Discovery Channel Length: 83 Date: February 15, 2007 Could humans one day live on the Red Planet?

Space Colonies: Destination Moon Channel: Discovery Channel Length: 108 Date: February 15, 2007 Could humans actually live on the moon?

Fireballs from Space: Comet Impacts Jupiter Channel: Discovery Channel Length: 122 Date: February 15, 2007 Astronomers spot a massive comet impact on Jupiter. How would a similar hit affect Earth?

Fireballs from Space: Links to the Past Channel: Discovery Channel Length: 136 Date: February 15, 2007 Could stardust from comets offer us a way to go back in time?

Fireballs from Space: Reenacting a Meteor’s Impact Channel: Discovery Channel Length: 161 Date: February 15, 2007 Scientists reconstruct a meteor impact on Earth.

Alien Planet: What Would Happen If We Found Alien Life? Channel: Discovery Channel Length: 272 Date: February 15, 2007 Scientists discuss ways that alien discoveries can change life on earth.

Alien Planet: What Is Life? Channel: Discovery Channel Length: 191 Date: February 15, 2007 Scientists discuss the definition of life in reference to life on other planets.

Alien Planet: Is Intelligent Life Out There? Channel: Discovery Channel Length: 305 Date: February 15, 2007 Scientists discuss the probability of finding intelligent life.

Alien Planet: How Do We Find Alien Life? Channel: Discovery Channel Length: 235 Date: February 15, 2007 Scientists discuss ways that they are searching for life on other planets.

Alien Planet: Are We Alone? Channel: Discovery Channel Length: 249 Date: February 15, 2007 Scientists discuss the probability that we are not alone in the universe.

UFOs Over Phoenix: Defining the Mystery Channel: Discovery Channel Length: 184 Date: February 15, 2007 There are many theories as to what was streaking through the skies over Phoenix on March 13, 1997.

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