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TED-Ed
Tycho Brahe, the Scandalous Astronomer
Who says scientists are boring geeks? Certainly not the narrator of a short video who dishes up the scandals associated with Tycho Brahe, a Danish scientist and alchemist (now that's two labels you don't often see together) who used...
CK-12 Foundation
Orbital Motion
Why do planets orbit the sun in ellipses when moons orbit their planet in circles? Pupils control the semi-major axis, eccentricity of the orbit, and position angle. The resulting orbital appears with the related force vectors as...
CK-12 Foundation
Field Lines
The earth has a giant magnetic field caused by the liquid iron that constantly moves in the outer core. Scholars explore the magnetic fields of four different planets. The strength and alignment of the poles relates to the implications...
CK-12 Foundation
Journey to Mars
Why are there launch windows when traveling to outer space? Scholars explore the trajectory of traveling from one planet to another. By adjusting the departure and destination planets, as well as the launch date, they observe the ideal...
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