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NASA and SpaceX are now less than two weeks from a historic crew launch

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A sun-watching spacecraft just might fly through tail of Comet ATLAS in rare encounter

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'What Stars Are Made Of' tells the life story of the woman behind a stellar science

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Book excerpt: 'What Stars Are Made Of' (Harvard University Press, 2020)

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Astronauts to ride NASA-adorned Tesla Model X to SpaceX launchpad

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Exploring new tools in string theory

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Pluto's wispy atmosphere may be surprisingly robust

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SpaceX Falcon 9 rocket aces test-fire for next Starlink launch

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Astronauts enter a routine quarantine for historic SpaceX Crew Dragon launch

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The space game 'Stellaris' is free to play on Steam this week for its 4th anniversary

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Future Mars and moon rovers may paddle their way out of sand traps

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NASA orders 18 more engines for its Space Launch System megarocket

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Video from space: Companies sign deal to launch 1st 'EarthTV' satellite in 2021

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NASA to pay Russia $90 million for a Soyuz seat on a crew launch this fall

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In photos: SpaceX's Crew Dragon Demo-2 mission to the International Space Station

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Air pollution levels will bounce back as COVID-19 restrictions loosen, scientists say

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Scientists looked back in time to find new evidence for Europa plumes

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You can dock a SpaceX Crew Dragon at the space station in this free simulator

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Newfound Comet SWAN could soon fizzle out of view

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Your kids can join a free class with an astronaut (and more) in these virtual school days

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These lava tubes could be the safest place for explorers to live on Mars

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Saturn's weird hexagon has 'sandwich-like' layers of hazy mists

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Chinese Kuaizhou-1A rocket launches 2 satellites for the 'Internet of Things'

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Massive piece of Chinese space junk slams uncontrolled into Earth's atmosphere