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 altitude archaeoastronomy Astronomy azimuth azimuthangle coordinate system binding energy brightness celestial equator classical mechanics collapse conjunction coordinate system Copernicus crosssection declination deferent ecliptic elongation epicycle equatorial coordinate system equinox escape velocity formulae Galileo geocentric gravitational constant gravitational potential energy gravity greek astronomy Heisenberg uncertainty principle heliocentric Hipparcus HUP hydrostatic equilibrium Isaac Newton KelvinHelmholtz timescale Kepler Kepler's Laws kinetic energy luminosity MaxwellBoltzmann distribution mechanical energy meridian mometum Nebra skydisk neutrino Newton's laws opacity opposition Planck's constant Plato position precession proper motion Ptolemy pyramids Pythagoras radial velocity radiation pressure Rayleigh criterion resolution right ascension sidereal period sidereal time skydisk solar time solstice standard deviation stonehenge synodic period tangential velocity transverse velocity Tycho Brahe Virial theorem zenith

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Tag Archives: gravitational potential energy
Protostar Formation – Infographic
Took me a while to do that. I hope that you like what I did. In some respects, I am not happy. I wanted to fit much, much more info. But I saw very soon that that was not going to … Continue reading
Escape Velocity
Previous: Newton’s Laws How fast must an object travel to escape a gravitational potential well? At the escape velocity, or faster. G = Gravitational constant, 6.67300 × 1011 m3 kg1 s2 M = Mass of the planet (or whatever it is) r = distance … Continue reading