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Tag Archives: NASA
Why Leave Earth? (An Earth Day Reflection on Going Beyond It)
This Earth Day, while we celebrate the only home we’ve ever known, it might seem strange to talk about leaving it, but after my recent post on the Artemis II mission, a reader asked a question that stopped me in … Continue reading
Posted in Science, Technology
Tagged Artemis II, Earth, Earth Day, exploration, International Space Station, Mars, Moon, NASA, science, space
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Falling Forever: Why 200 Miles Up Feels Like Zero Gravity
After I wrote about losing gravity, I was asked a great follow-up question: if the Earth is a massive object warping the fabric of spacetime and pulling everything toward it, why do astronauts appear like they’re floating in a giant … Continue reading
Posted in Science
Tagged acceleration, artificial gravity, centrifugal force, Earth, freefall, general relativity, generational spacecraft, geodesic, Gravitron, gravity, International Space Station, Low Earth Orbit, mass, NASA, orbit, orbital mechanics, physics, relativity, science, spacetime, Sun, Vomit Comet, weight, weightlessness
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