Our Sun is an ordinary star; however, as our own star, it holds special status for us and is essential to our existence. The Sun's gravity holds the solar system together, and nuclear fusion within the Sun supplies the...

This PDF document consists of lesson plans and an activity which is composed of a three-part questionnaire that launches students on discussions about where objects in space are located, and when they were formed- an...

This web page from Professor David Jewitt gives an explanation of kuiper belt objects and comets. It is described at a very basic level and includes links and images.

This site from NOVA and PBS provides a simulation of the identification of elements in a star, a nebula, a planet, and a galaxy. The interactive resource allows a user to match individual spectral lines of seven...

Authored and curated by David P. Stern, this series of three web pages gives information about the usage of the transit of Venus to measure distances in the solar system. The site also contains a large collection of...