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Space is completely silent because there is no air, which prevents sound from traveling.

However, experts warn that Butch Wilmore and Suni Williams' unplanned stay on the International Space Station (ISS) could have serious health impacts. Shocking before-and-after images show the ...

Related: 10 devastating signs of climate change from space How well do you know Earth? Take the Earth Day quizzes to find out. Earth Day is an annual event that started in 1970 when 20 million ...

On April 14, six women launched into space aboard Blue Origin’s New Shepard rocket, lifting off from West Texas for a short but powerful journey that lasted just over 11 minutes. While the ...

"We're really talking about something which is, in the long term, like rebuilding the internet in space," Musk said during a speech in Seattle when revealing the project. SpaceX's satellite ...