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Astronomy

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NASA Science. The Scale of the Universe - Swirl. The Known Universe. Daylight Hours Explorer. Shows the hours of daylight received during the year for an observer at a given latitude.

Daylight Hours Explorer

This is an important factor contributing to the seasons. Running this animation on your computer... right-click to download daylighthoursexplorer.swf and daylighthoursexplorer.html to the same directory open the html file in a browser to run the animation Linking to this animation... copy and paste the code below into your webpage or blog: Planets. Planetarium - Interactive star map and virtual sky. Your Age On Other Worlds. Want to melt those years away?

Your Age On Other Worlds

Travel to an outer planet! <div class="js-required"><hr> This Page requires a Javascript capable browser <hr></div> Fill in your birthdate below in the space indicated. (Note you must enter the year as a 4-digit number!) Click on the "Calculate" button. S Curiosities. This series of pictures show the moon going from the new moon stage to full moon and then back again in a sequence that is pretty to look at in real time, but amazing when a month goes by in a few seconds.

s Curiosities

Mars Rocks. Astro.unl.edu/naap/motion3/animations/sunmotions.swf. SolarBeat. WIKISKY.ORG. Solar System Visualizer.