This story appears in the March 2019 issue of National Geographic ... the space fleet would reach Alpha Centauri in 20 years after launch. “It’s not science fiction,” Manchester says.
National Geographic premiered "SALLY," Cristina Costantini's new documentary about the first U.S. woman in space and her ...
The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...
National Geographic Day, celebrated annually, honors the spirit of exploration, discovery, and understanding the world around ...
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