Science and Technology
Links
Earth 911
- Earth 911 delivers actionable local information on recycling and product stewardship that empowers consumers to act locally, live responsibly and contribute to sustainability.
Both the Earth911.com site and 1-800-CLEANUP toll-free hotline are provided at no cost to the user or taxpayer. Earth 911 centralizes information and resources into a single user-friendly, neutral and non-governmental network.
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HubbleSite
- HubbleSite is the home of NASA's Hubble Space Telescope, the renowned orbiting telescope whose discoveries have forever altered our knowledge of the universe.
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Sidewalk Astronomers
- The Sidewalk Astronomers is a California non-profit corporation with members throughout the world. Our staff is all volunteer and our financial statements are available on request. Since 1968, when John Dobson and two of his students (Bruce Sams and Jeff Roloff) started the San Francisco Sidwalk Astronomers, our sole purpose for existence has been public service in astronomy. In 1976, our growing organiztion became known simply as "the Sidewalk Astronomers" although legally, the "San Francisco" remains.
What we consider to be our primary work is: 1)giving the people of this planet a chance to see, with their own eyes, celestial objects through good-sized telescopes, and 2) providing them with information about what they are seeing. We never charge for this service, and anyone who does in not affiliated with our organization! In order that more people may own and use telescopes for this purpose, we also teach classes and offer assistance in low-cost telescope making.
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the Sidewalk Astronomers
- Welcome to the official website of our organization, which is dedicated to public service in astronomy. Since 1968, Sidewalk Astronomers' primary purpose has been to fill the need for public astronomical observation.
JOHN DOBSON: THE VISIONARY
Also available are materials related to John Dobson. Co-founder of Sidewalk Astronomers and creator of the Dobsonian telescope mount. His scientific musings are very thought provoking and, like Einstein's Relativity, require us to re-examine many of our long-held views. Dobson's theories in physics and cosmology boldly break new ground and significantly challenge the scientific orthodoxy.
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