Binoculars and Telescopes Online |
Telescope - Binoculars - Astronomy - Microscope Digital Scope - Buying Binoculars - Bird Watching - Astronomy Binocular Listen to Coronavirus Patient Zero X-ray Astronomy With The Einstein Satellite RRP $684.99 ![]() Riccardo Giacconi Harvard/Smithsonian Center for Astrophysics The meeting of the High Energy Astrophysics Division of the American Astronomical Society, held in Cambridge, Massachusetts on January 28- 30, 1980, marks the coming of age of X-ray astronomy. In the 18 years since the discovery of the first extrasolar X-ray source, Sco X-l, the field has experienced an extremely rapid instrumentation development culminating with the launch on November 13, 1978 of the Einstein Ob servatory (HEAO-2) which first introduced the use of high resolution imaging telescopes to the study of galactic and extragalactic X-ray sources. The Einstein Observatory instruments can detect sources as faint as 10-7 Sco X-lor about 17 magnitudes fainter. The technological developments in the field have been paralleled by a host of new discoveries: in the early 1960's the detection of 9 "X-ray stars", objects 10 times more luminous in X-rays than the Sun and among the brightest stellar objects at all wavelengths; in the late 1960's and early 1970's the discovery of the nature of such systems which were identified as collapsed stars (neutron stars and black holes) in mass exchange binary systems, and the detection of the first few extragalactic sources. The Great Space Chase 7- A Mystery About Astronomy RRP $12.99 ![]() It's Space Week at Camp Dakota! The first team to answer three astronomy riddles will get to attend a top secret big event." With space ace Angie leading them, team Astro Explorers is a shoo-in for first place. So why is team Star Troopers solving the riddles first? The Astro Explorers had better think fast if they want the big prize. Encyclopedia Of Space And Astronomy RRP $295.99 ![]() Encyclopedia of Space and Astronomy covers this timely and popular topic in a clear, comprehensive manner. Offering a complete presentation of the main concepts, terms, facilities, and people in astronomy, the encyclopedia pays special attention to space-based astronomy and space exploration. Broad coverage includes terms such as astrophysics, planetary science, and cosmology, as well as both American and international astronomy and space technology. Containing more than 3,000 cross-referenced entries and 15 essays, as well as approximately 250 black-and-white photographs and line illustrations, this authoritative reference provides students and teachers with a visually stimulating learning experience.
Search
![]() Binoculars and Telescopes Online Articles
Binoculars and Telescopes Online Books
| Binoculars and Telescopes Online |
---|