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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.
Planetary exploration vessels like Voyager I and Voyager II made use of propulsion maneuvers which gained energy from the planets and moons they passed.
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.
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!
A relatively basic animation that allows you to view the entire Solar system, or just the inner planets (through the orbit of Mars).
Description of calculation to find an escape velocity such as for an object launched from earth to avoid orbit.
What shape is the Earth's orbit? How doe seasons work? Test your knowledge in this quiz aimed at revealing common misconceptions.
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.
Doppler studies of this blue supergiant in Cygnus indicate a period of 5.6 days in orbit around an unseen companion. The mass of the companion is calculated to be 8-10 solar masses, much too large to ...
Use this site to find the velocity for a body to escape orbit.
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