FAA outlines guidelines for space tours
Passengers should get medical exams, safety training
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Related: New Space Race
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'The World at Night' reveals beauty — and a dark side
Science editor Alan Boyle's blog: Do the images featured by The World at Night celebrate wonders of the night sky, or draw attention to worries about the night sky? The answer is "both."
- Astronaut to become first quilter in space
- Space station chief returns home a star
- Capsule returns to Earth with space station trio
- Sun unleashes 2013's biggest solar flares
- Shuttle Atlantis' payload bay opens again
- Beautiful plankton blooms viewed from space
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'The World at Night' reveals beauty — and a dark side
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