Collision Course

Thirty million years from now, a massive cloud of gas will collide with the Milky Way. Scientists are learning more about its origin.


© ScienceAtNASA

Sky Notes

Daily sky events and viewing aids to help you get the most out your observations.
See what is visible in the sky tonight»


©2014 Rob van Mackelenbergh

Astro 101

Learn the basics about our solar system through the Astro 101 section.
learn more about our solar system»


©NASA, ESA, GOODS Team, &d M. Giavalisco
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