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The SAO/NASA Astrophysics Data System (ADS) is a Digital Library portal for researchers in Astronomy and Physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. The ADS maintains three bibliographic databases containing more than 7.2 million records: Astronomy and Astrophysics, Physics, and arXiv e-prints. The main body of data in the ADS consists of bibliographic records, which are searchable through highly customizable query forms, and full-text scans of much of the astronomical literature which can be browsed or searched via our full-text search interface. Integrated in its databases, the ADS provides access and pointers to a wealth of external resources, including electronic articles, data catalogs and archives. We currently have links to over 7.9 million records maintained by our collaborators.
The last transit of Venus took place recently on 5 and 6 June 2012, and it was the last Venus transit of the 21st century. Venus transits are very rare events. The next one will be December 10–11, 2117. So it is much likely that this on was the very last Venus transit I had a chance to see in my lifetime.
On January 4, 1643, Sir Isaac Newton, famous physicist, mathematician, astronomer, natural philosopher, alchemist and theologian, was born. With his Principia he laid the foundation of modern classical mechanics.Besides he constructed the very first reflecting telescope and independent of Gottfried Wilhelm Leibniz developed differential and integral calculus.
Once again, astronauts on the International Space Station dissolved an effervescent tablet in a floating ball of water, and captured images using a camera ca...
A controversial observation suggests that a constant of physics actually varies in space – it could explain why our corner of the cosmos is just right for life
D. McComas, F. Allegrini, L. Bartolone, and et al.. Solar Wind 11/SOHO 16, Connecting Sun and Heliosphere, volume 592 of ESA Special Publication, (September 2005)
J. Scheer, K. Bruning, T. Frohlich, P. Wurz, and W. Heiland. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 157 (1-4):
208--213(August 1999)