]> Binary Star Center of Mass Analogy ... images/binaryvariablestars/binarystarseesaw.jpg 720 480 Angular Diameter ... images/ancientastro/angulardiameter.jpg 900 594 Arcsecond Diagram ... images/ancientastro/arcseconddiagram.jpg 1000 614 Fist Angle ... images/ancientastro/fistangle.jpg 850 561 Distance Modulus This is the description of this image images/binaryvariablestars/distancemodulus.jpg 550 788 Declination This is the description of this image images/coordsmotion/declination.jpg 600 480 Ecliptic This is the description of this image images/coordsmotion/ecliptic.jpg 382 413 Polar Rotation This is the description of this image images/coordsmotion/polarrotation.jpg 490 685 Right Ascension This is the description of this image images/coordsmotion/rightascen.jpg 600 480 North Celestial Pole This is the description of this image images/coordsmotion/startrails.jpg 200 200 Time Zones This is the description of this image images/coordsmotion/timezones.jpg 4779 1979 Determination of Unknown Density This is the description of this image images/intro/density_determination.jpg 1148 820 Doppler Effect This is the description of this image images/light/dopplereffect.jpg 800 223 Electromagnetic Spectrum This is the description of this image images/light/electromagneticspectrum.jpg 830 593 Electromagnetic Wave This is the description of this image images/light/electromagneticwave.jpg 579 396 Hydrogen Bohr Transitions This is the description of this image images/light/hydrogenbohrtransitions.jpg 350 350 Hydrogen Electron Clouds This is the description of this image images/light/hydrogenelectronclouds.jpg 336 198 Hydrogen Spectrum This is the description of this image images/light/hydrogenspectrum.jpg 339 81 Radar Gun Doppler Shift This is the description of this image images/light/radargun.jpg 612 792 Checkbook Analogy This image has three panels each illustrating binding energy in the hydrogen atom in a different way: the actual transitions between energy levels, binding energy on a number line, and a checkbook. images/light/checkbook.jpg 1017 907 Solar Spectrum This is the description of this image images/light/solarspectrum.jpg 1024 683 Wave Properties This is the description of this image images/light/wave.jpg 600 140 Lunar Cycles This is the description of this image images/lunarcycles/lunarcycles.jpg 649 606 Lunar Eclipse I This is the description of this image images/lunarcycles/lunareclipse.jpg 812 277 Lunar Eclipse Sequence 2004 This is the description of this image images/lunarcycles/lunareclipse2004.jpg 400 600 Lunar Eclipse 2008 This is the description of this image images/lunarcycles/lunareclipse2008.jpg 619 800 Line of Nodes This is the description of this image images/lunarcycles/nodes.jpg 826 394 Pot Pie Phases This is the description of this image images/lunarcycles/potpie.jpg 612 408 Lunar Rotation This is the description of this image images/lunarcycles/rotation.jpg 561 520 Solar Eclipse Paths This is the description of this image images/lunarcycles/seatlas2001.jpg 1024 772 Lunar Sidereal Period This is the description of this image images/lunarcycles/sidereal.jpg 613 485 Total Solar Eclipse This is the description of this image images/lunarcycles/solareclipse.jpg 734 279 Annular Solar Eclipse This is the description of this image images/lunarcycles/solareclipse2.jpg 734 279 Annular Solar Eclipse 1994 This is the description of this image images/lunarcycles/solareclipse1994.jpg 512 480 Total Solar Eclipse 1999 This is the description of this image images/lunarcycles/solareclipse1999.jpg 690 600 Solar Eclipse from Mir 1999 This is the description of this image images/lunarcycles/solareclipse1999mir.jpg 800 600 Total Solar Eclipse 2008 This is the description of this image images/lunarcycles/solareclipse2008.jpg 1024 768 Lunar Synodic Period This is the description of this image images/lunarcycles/synodic.jpg 613 485 Tides This is the description of this image images/lunarcycles/tides.jpg 490 349 Types of Shadow This is the description of this image images/lunarcycles/umbrapenumbra.jpg 686 237 Aberration Diagram This is the description of this image images/renaissance/aberrationdiagram.jpg 400 340 Retrograde This is the description of this image images/renaissance/retrograde.jpg 600 150 Distance Scale This is the description of this image images/stellarprops/distancescale.jpg 388 810 Parallax This is the description of this image images/stellarprops/parallax.jpg 300 188 Parallax Example This is the description of this image images/stellarprops/parallaxexample.jpg 250 177 Proper Motion This is the description of this image images/stellarprops/propermotion.jpg 394 289 Spectral Classification This is the description of this image images/stellarprops/spectralclassification.jpg 400 202 Hydrostatic Equilibrium in a Star Hydrostatic Equilibrium in a Star: Gravity vs. Pressure images/sunsolarenergy/hydrostaticequilibrium.jpg 900 450 Fusion Reaction Fusion Reaction in the Core of a Star images/sunsolarenergy/fusion.jpg 900 600 Gas Density and Orbital Energies ... images/light/gasdensity.jpg 600 400 Stellar Motion on the Celestial Sphere Proper motions is displayed for various values of radial and transverse velocity. images/stellarprops/propermotion.jpg 1000 750 Optical Doubles and Visual Binaries ... images/binaryvariablestars/opticaldoublesandvisualbinaries.jpg 800 479 Solar Architecture ... images/coordsmotion/solararchitecture.jpg 800 533 Roemer's Speed of Light This image illustrates the lags and leads of the timings of Io's eclipses. images/jovianplanets/roemer_speedoflight.jpg 1067 600 Saturn in a Bathtub This image humorously illustrates that the density of Saturn is less than that of water. images/jovianplanets/saturnbathtub.jpg 900 600 Comet Trajectory This image displays a comet passing through perihelion and the directions of the two tails. images/solarsystemdebris/comettrajectory.jpg 675 621 Kirkwood Gaps This image displays the distribution of asteroids and the Kirkwood Gaps. images/solarsystemdebris/kirkwoodgaps.jpg 900 325