Astronomy

Astrophysics

Calculations

  • ABC's of Distance
  • Astronomy Formulas
  • Astrophysical Calculator
  • iFigure Astronomy Calculators
  • Old Farmer's Almanac Astronomy
  • PBS: Sense of Scale
  • Powers of Ten
  • Powers of Ten Applet
  • Scale of the Universe
  • Top of Page
  • Kepler's Laws

  • Kepler's Laws of Planetary Motion
  • Wikipedia Kepler's Laws of Planetary Motion
  • Top of Page
  • Orbits

  • Fundamental Physics in Space
  • Hohmann Transfer Orbit
  • Lagrange Points
  • Newton's Law of Gravity
  • Newton's Laws & Planetary Motion
  • Newtonian Mechanics
  • Orbital Motion
  • Orbits in 2D
  • Orbits in 3D
  • Orbits in Strongly Curved Spacetime
  • Wikipedia Newton's Laws of Motion
  • Wikipedia Titius-Bode Law
  • Derivation of Circular and Escape Velocity
  • Derivation of Circular Velocity Perihelion and Aphelion
  • Top of Page
  • Light

  • Circles of Light: The Mathematics of Rainbows
  • Cool Cosmos
  • Doppler Shift
  • Electromagnetic Spectrum Applet
  • Electromagnetic Spectrum Calculator
  • Electromagnetic Spectrum Chart
  • Electromagnetic Spectrum Chart
  • Element Absorption & Emission Spectra
  • Hydrogen Energy Levels Applet
  • Rainbows
  • Redshift Demonstration, YouTube
  • Tour of the Electromagnetic Spectrum
  • Why is the Sky Blue?
  • Wikipedia Color
  • Wikipedia Electromagnetic Spectrum
  • Wikipedia Light
  • Top of Page
  • Relativity

  • Classic Einstein Train Scenario
  • General Relativity Tutorial Long Course
  • General Relativity Tutorial Short Course
  • NOVA: Einstein's Big Idea
  • Twin Paradox
  • Twin Paradox
  • Wikipedia General Relativity
  • Wikipedia Special Relativity
  • Top of Page
  • Time Travel

  • NOVA: Travelling through Time
  • PBS: The Fabric of the Cosmos: The Illusion of Time
  • Plausibility of Time Travel
  • Time Travel Research Center
  • Wikipedia Time Travel
  • Top of Page
  • String Theory

  • NOVA: A Theory of Everything?
  • Wikipedia String Theory
  • Top of Page
  • Resources

  • NASA Astrophysics
  • Top of Page