Astronomy
epub |eng | | Author:John Wilkinson
Daily drawings of sunspot groups can be used to monitor their evolution (change in shape and appearance) as they move across the Sun’s disc. Remember a single spot is also ...
( Category:
Astrophysics & Space Science
April 8,2016 )
epub |eng | | Author:David A.J. Seargent
Black Meteors Have you ever been watching the sky for meteors – probably during the time of a meteor shower – when you suddenly seem to see a dark object ...
( Category:
Astronomy
April 8,2016 )
epub |eng | 2014-04-07 | Author:Paul Abel
Victoria Crater as seen by the Opportunity rover. The discoveries by Spirit and Opportunity have been remarkable, largely thanks to their longevity but also because they carry a sophisticated suite ...
( Category:
Astronomy
April 8,2016 )
epub, mobi |eng | | Author:Giancarlo Genta
16 The Fourteenth Fleet The round trip to Isqaht, Ytl and Gorkh’ar took more than a month, and Tom got back to the Gatlaat system on the 35th day. The ...
( Category:
Regional
April 8,2016 )
epub |eng | | Author:Tony Buick
Fig. 3.34A William Jones orrery from around 1794. (Photograph by the author with permission of Sir Patrick Moore) Figure 3.35 shows the stunning detail of the print on the hand-colored ...
( Category:
Astronomy
April 7,2016 )
epub |eng | | Author:David A. J. Seargent
Other “Plutos” and Their Siblings Returning to Kuiper belt objects in general, several groups or families of these have been distinguished according to their orbital characteristics; principally how they relate ...
( Category:
Astrophysics & Space Science
April 7,2016 )
epub |eng | | Author:Sujan Sengupta
Difficult to Detect Extra-Solar Planets Directly Since the discovery of 51 Pegasi b, a large number of planets and planetary systems outside the solar system have been discovered within a ...
( Category:
Geology
April 7,2016 )
epub |eng | 2009-03-24 | Author:Owen Gingerich
Herein was fulfilled one of the most touching of prophecies. Years before, the opponents of Copernicus had said to him, "If your doctrines were true, Venus would show phases like ...
( Category:
Cosmology
March 25,2016 )
epub |eng | | Author:Martin Rees [Rees, Martin]
THE TUNING OF THE INITIAL EXPANSION Ω may not be exactly one, but it is now at least 0.3. At first sight, this may not seem to indicate fine tuning. ...
( Category:
Astronomy
March 13,2016 )
epub |eng | 2013-03-10 | Author:Peter Galison
Figure 4.4 Hunting the Ether. With a remarkable series of experiments, Albert Michelson sought to measure the earth’s motion through the elusive ether. In the 1881 device shown here, he ...
( Category:
Relativity
March 11,2016 )
epub, mobi, azw3 |eng | 2002-10-03 | Author:Stephen Webb [Webb, Stephen]
FIGURE 44: The planetary nebula NGC 7027. Objects like this produce much of the carbon we observe in the Universe. The main producers of cosmic carbon are planetary nebulae, which ...
( Category:
Astronomy
March 6,2016 )
mobi, epub, pdf |eng | 2014-06-02 | Author:Terry Pratchett
TWENTY-FOUR DESPITE WHICH … THAT BLUE IN THE ROUNDWORLD SEA isn’t a chemical – well, not in the usual ‘simple chemical’ sense of the word. It’s a mass of bacteria, ...
( Category:
Astronomy
February 29,2016 )
epub, mobi |eng | 2016-02-12 | Author:Robert M. Schoch [Schoch, Robert M.]
What distinguishes a vitrified fort? The stone walls and structures have been subject to intense heat, to the point where some of the rocks have melted and fused, forming masses ...
( Category:
Astronomy
February 14,2016 )
epub, azw3 |eng | 2015-12-31 | Author:Jay Gallentine [Gallentine, Jay]
14 Devil from Redondo A horrendous undertaking. —Loyal Goff of NASA’s Viking Program Office, on the Viking Biology Instrument Unfettered and indiscriminate in attitude and behavior, the Looney Tunes Tasmanian ...
( Category:
Astronautics & Space Flight
February 13,2016 )
epub |eng | 2013-07-30 | Author:Pasachoff, Jay M. & Filippenko, Alex [Pasachoff, Jay M.]
12.3c Radioactivity and Neutrinos Sometimes an isotope is not stable, in that after a time it will spontaneously change into another isotope or element; we say that such an isotope ...
( Category:
Astronomy
February 1,2016 )
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