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...

Have you ever heard that the moon is made of cheese? Even though the craters on the surface of the moon resemble holes in Swiss cheese, we know that this common myth is not true. Find out how craters are formed and why they are different...

Besides an introduction to exhibitions and events at the museum, the site provides a guide to stargazing, an astronomy FAQ, space news, virtual tours (see site map) and research resources (including Chinese-English star and constellation...

In ancient times only five planets were known: Mercury, Venus, Mars, Jupiter, and Saturn. Learn about Greek astronomer Ptolemy's theory for the solar system that was to survive for fourteen centuries.

How do astronomers collect stardust? They design and build satellites that are launched into space to collect particles on specially designed panels. Satellites can be sent to orbit around an object of interest: a planet, moon, or comet....

Great lesson plans covering a wide-range of science-related subjects. A wonderful resource for wonderful teachers!

Space can be explored in many different ways. Read about space exploration and click on the topics on the right margin to find out how man finds out about his universe.

Kids learn about the astronauts who travel and explore outer space including spacesuits, fun facts, and famous adventurers like Buzz Aldrin, Yuri Gagarin, and Sally Ride.

Investigate the science of radio astronomy, and create a model of a curved reflecting dish that will work like the Arecibo detector to detect electromagnetic waves. Explore risk using a risk space grid.

Create a classroom model of the solar system while teaching about relative size of all the planets, and each planet's distance from the sun.

A detailed description of a supernova developing from a single massive star. There is a quiz, related links, animation, lesson plans, and an FAQ sheet available also.

A collection of audio lectures from an introduction to astrophysics course taught at the University of California, Berkeley. The course discusses the solar system, stars, quantum mechanics, gravitation, and cosmology focusing on how...