The American Museum of Natural History is one of the world's preeminent scientific and cultural institutions. Since its founding in 1869, the Museum has advanced its global mission to discover, interpret and disseminate information about human cultures, the natural world and the universe through a wide-ranging program of scientific research, education and exhibition.
Relativity: Einstein's theory of special relativity in multimedia tutorial. The introductory level takes 10 minutes, but has links to over 40 explanatory pages giving greater depth and detail. Einstein Light has a simple introduction to Galilean relativity, electromagnetism and their incompatibility; it explains how Einstein's relativity resolves this problem, and develops time dilation, length contraction and other consequences of relativity for our ideas of time, space and mechanics, including the twin paradox and E=mc2.
The European Space Agency portal features the latest news in space exploration, human spaceflight, launchers, telecommunications, navigation, monitoring and space science.
NASA.gov brings you images, videos and interactive features from the unique perspective of America’s space agency. Get the latest updates on NASA missions, subscribe to blogs, RSS feeds and podcasts, watch NASA TV live, or simply read about our mission to pioneer the future in space exploration, scientific discovery and aeronautics research.
A web-based data bank where Educators can use this collection to find curriculum materials, images, classroom demonstrations, labs, online learning resources, evaluation instruments, and articles about approaches to astronomy education. The collection can be searched by keyword or browsed by topic or type of resource. Advanced Search with more details can also be performed.