Science Buddies
Science Buddies: A Puzzling Parallax
Did you know that ancient astronomers could measure the distance to other stars? They could also distinguish between stars and planets. How could they do that without modern technology of telescopes? See if you can discover the link...
TeachEngineering
Teach Engineering: Beyond the Milky Way
When we look at the night sky, we see stars and the nearby planets of our own solar system. Many of those stars are actually distant galaxies and glowing clouds of dust and gases called nebulae. The universe is an immense space with...
Alabama Learning Exchange
Alex: Comets
During this lesson, students have the opportunity to explore comets. By navigating the Internet, viewing a slideshow, and participating in a videoconference with NASA, students will discover what comets are all about.
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