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Photo copyright R. Gendler: Image that reveals that the Andromeda Galaxy's (M31's) core is composed of a ring of old, red stars and a newly discovered disk of young, blue stars.

Astronomycenter.org is a collection of Astronomy 101 reviewed digital resources for teachers and students...

Cover of teacher's guide that has been designed for use in upper elementary through high school.

NASA Educator Guides offer lessons and activities for learning about aeronautics, clouds, energy, the...

Photo pf Kennicott and Root Glaciers, Alaska.  Taken by Z. Smith

Exploring Earth: Investigations provides more than 75 earth science investigations. Each presents photos and text (and...

Hermann Oberth, a transplanted Romanian, vigorously promoted the idea of spaceflight.

From Stargazers to Starships is a self-contained book-on-the-web course on basic astronomy, Newtonian mechanics, the...


National Science Foundation

NASA

National Science Foundation

NASA
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