Geo Visitors Map


  Beauty & mystery in science.

Nucleus of Galaxy Centaurus A, NGC 5128. The blue clusters in this image are newly born stars. Credit: E.J. Schreier [STScI], and NASA.


  Science tidbit

Muticolored holiday lights.
Lights in Series and in Parallel

Why is it that those old strings of holiday lights stopped working as soon as one light burned out? Couldn't they make them any better?

Learn about the change that made them better.




Delivery Addresses

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