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#outerspace

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Thousands of rockets have launched into space over the last several decades. But what would it take to build an elevator that goes from Earth to space? Thousands of meters of cable, for starters. @sciencefocus has more on this impossible-sounding idea that more people have been giving serious thought over the years.

flip.it/4foPpY

BBC Science Focus Magazine · Just one cable stands between us and space elevators

Physicist, giving a lecture to kids: "... And based upon what we've measured for the celestial horizon, some scientists think the universe has a shape we call the Doughnut Shaped Model"
Daughter, raising her hand: Why didn't you call it the Everything Bagel?
[15 seconds of angry silence from physicists who realizes he's been beaten]

If you’ve ever been taught how Earth orbits around the Sun, you might think our planet travels along an oval-shaped path that brings it closer to the Sun at some times of the year than others.

You’d have a good reason to think that, too: it’s how most textbooks show things. But what if your textbooks were wrong?

See what the Earth, the Sun and a bike wheel have in common as we explain exactly how orbits work… ausgeo.co/orbits

#space #outerspace #astro #astronomy #astrophotography #australia #galaxy #sun #planet #earth #orbit #stars #cosmos #star #moon #sunshine #universe #science #planets #spaceexploration #spaceship #milkyway #nightsky
#academia #research #academicchatter #science #scientist #space #astronomy #astrodon

Australian Geographic · What your school textbook didn’t tell you about the Earth’s orbitBy Elisabeth Marie