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NASA 2020: Mars, return to the Moon and more

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50 graves of slaves who toiled at a Roman villa unearthed in England

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Fires set stage for irreversible forest losses in Australia

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Titanic remains protected by joint US-UK treaty signed by Pompeo

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Apollo 11 images of Buzz Aldrin get high-def treatment for astronaut's 90th birthday

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NASA conducts third all-female spacewalk

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Boeing Starliner lands in New Mexico after failing to reach ISS

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NASA announces graduation of first astronaut class under the Artemis program

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Boeing's Starliner capsule makes debut launch to International Space Station

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