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Challenging the Space Frontier

Explore the stories of three exciting space missions: "Friendship 7" - John Glenn Orbits the Earth; "Apollo 11" - First Moon Landing and "STS-7" - First American Woman in Space.

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Hits: 2582

Solar system visualiser

Visit this interactive site to explore the orbits of planets and their moons in our solar system and also in a wide selection of extrasolar planetary systems.

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Hits: 3897

Gravitational Acceleration in Schwarzschild Coordinates

Derivation of acceleration for a particle in a radial orbit in Schwarzchild geometry which, surprisingly, depends on its trajectory.

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Hits: 1497

Gravity-Assist Orbit

Planetary exploration vessels like Voyager I and Voyager II made use of propulsion maneuvers which gained energy from the planets and moons they passed.

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Hits: 1451

Newtonian Mountain

Shows cannonball projected off mountain. Different speeds produce different results. I particularly liked the "touch" when the ball completed an orbit and returned to where it left the mountain!

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Hits: 2362

Pierre-Simon Laplace

Pierre-Simon Laplace (1749 - 1817) was a French mathematician, astronomer, and physicist who is best known for his investigations into the solar system in particular the orbits of planets.

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Hits: 1112


Escape Velocity

Description of calculation to find an escape velocity such as for an object launched from earth to avoid orbit.

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Hits: 1563

Solar System Live

A relatively basic animation that allows you to view the entire Solar system, or just the inner planets (through the orbit of Mars).

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Hits: 3182

Common space misconceptions

What shape is the Earth's orbit? How doe seasons work? Test your knowledge in this quiz aimed at revealing common misconceptions.

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Hits: 1088

Kepler's Tally of Planets

A really interesting data visualisation of all the planets Kepler has found, complete with information about their size, temperature, and distance and period of orbit.

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Hits: 1318

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