What have we learned about the universe over the past four centuries? Visions of the Universe asks just that, looking deep into the past to bring a bit of this history to the general public. On the site, visitors can make their way through twelve exhibits, including Storms on the Sun and Journey To Mars. Each section features a detailed poster for classroom use, along with other activities and...

These latest findings from Hubble will appeal to anyone with even a passing interest in astronomy. The first focuses on collisions between galaxies within Stephan's Quintet that have given rise to star clusters and dwarf galaxies. This release includes an introduction, background information, stunning photos, animations, videos, related links, and more.

The Henrietta Leavitt Flat Screen Space Theater is named for an American astronomer working at the Harvard Observatory in the beginning of this century. The site is authored by Carolyn Collins Petersen, an accomplished astronomy writer and part-time Hubble researcher. Carolyn takes viewers to "The Planetarium Show That Never Ends," where various heavenly bodies are displayed and described in...