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Journalist and author Emily Carney talks about her book which she co-authored, "Star Bound: A Beginner's Guide to the American Space Program, from Goddard's Rockets to Goldilocks Planets and Everything in Between".
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Journalist and author Emily Carney talks about her book which she co-authored, "Star Bound: A Beginner's Guide to the American Space Program, from Goddard's Rockets to Goldilocks Planets and Everything in Between".
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Early Monday morning, six planets will appear to align in the sky, and some could be visible with the naked eye.
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Some scientists say the comet last visited the Earth around 50,000 years ago.
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Marking the latest step in the commercialization of space, the SpaceX mission has launched four civilians, including a billionaire CEO, a physician assistant and a geoscientist.
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The two countries' space agencies say the proposal, which sets no time frame, could include an orbiting station, a base on the surface, or both.