Professor Douglas P. Hamilton and his students at the University of Maryland created this website to provide individuals with astronomy tools and tutorials. At the Astronomy Classroom, students can create scaled models, find out how long it takes to get to interesting places in the Universe, and explore the history of the cosmos. The website offers solar system calculators, animations of solar objects' orbits, simulations of the seasons, and much more. Visitors can also check out the newest additions to the site and can find out what are the most popular tools of the day.