Energy Department Seeks to Avert Nuclear Plant Break-Ins

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Report Questions Nation's Nuclear Plant Security

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Gravity Probe B to Test Einstein's Theory

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NASA Set to Test Einstein's Relativity Theory

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Missile-Shield Plan Goes Ahead

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Protecting the Nation's Nuclear Materials, Part 3

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Protecting the Nation's Nuclear Materials

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NASA to Test 'Scramjet' Aircraft

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Critics Doubt NASA's Hubble Plans

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NASA to Get Second Opinion on Hubble's Fate

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Hubble Glimpses Early Universe

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Hubble Peers Deep Into the Universe

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Scientists Blast Bush's Hydrogen Proposals

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