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Stellarium

Stellarium

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go.

You can type in a date, time, and location and see exactly what the night sky will look like.  Pan around, zoom in, add lines to show constellations, find deep sky objects, see the movement of...

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Anna Cordes
Anna Cordes (Student)
14 years ago

This is probably the most useful tool I have ever used in preparation for an astronomy program.  I can know exactly what the night sky will look like months before I present a program on constellations.  It also shows the movement of the planets, sun, and moon.  It even has a red filter so that you can have it on your computer at night without blinding yourself.  And it's free!