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NASA says an "interrupted flow" of helium to the rocket system could require a rollback to the Vehicle Assembly Building. If it happens, NASA says the launch to the moon would be delayed until April.
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The lawsuit challenges President Trump's plans for "Independence Arch," a 250-foot structure proposed for Memorial Circle. -
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The Pentagon and the Energy Department have airlifted a small nuclear reactor from California to Utah, demonstrating what they say is potential for the U.S. to quickly deploy nuclear power for military and civilian use. -
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President Trump says he hasn't decided whether to attack Iran. While he weighs his options, a military buildup over the past month means the U.S. now has an expansive presence in the region. -
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The four astronauts heading to the moon for the lunar fly-by are the first humans to venture there since 1972. The ten-day mission will travel more than 600,000 miles.
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