International Space Station modules explained
Station orbits in low Earth orbit at about 400 km The International Space Station circles Earth at an altitude of roughly 400 km, a region known as low Earth orbit, completing one…
Everything here arrived late
Space missions, life sciences, health and the Earth — a page each, written from what was measured rather than from the press release. Nothing you read about the sky is current: the light left a long time ago.
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Put in a distance — kilometres, astronomical units, light years or parsecs — and it returns how long light takes to cross it, which is the same thing as how old the picture is. The presets are the objects this site has actually written about.
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