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  • ...On this scale, the thin gas between stars may reach a temperature of only about 3 K. The Earth would be that cold too, except for some heat left over from ...anced by energy flowing out of its interior. '''Sunspots''' are cooler, at about 4500 K, because energy flow into them is blocked by a strong local magnetic
    26 KB (4,226 words) - 18:46, 23 January 2012
  • ...same. No matter how we make the measurement, we will find light moving at about 300,000 km/s. Multiply '''z''' by this speed, and you'll have that the velo ...effect has been studied with high precision. We find that galaxies recede about 70 km/sec faster for each '''megaparsec''' more distant they are. This is w
    5 KB (884 words) - 17:46, 19 March 2012
  • ...e and always the same size, since at the time Hubble had not yet found out about redshifts. ...ide the observable universe (approximately 46.5 billion light years away). About 60 million years before the end, gravity would be too weak to hold the [htt
    15 KB (2,570 words) - 21:00, 9 April 2012
  • an insulated metal box about 15 inches on a side. A large window on the to about -78 C. The pan is covered with
    11 KB (1,899 words) - 14:18, 19 November 2013
  • About 20 seconds into the film, the Sun sets in the west (notice the palm Shortly after this, about 40 seconds into the film, you see sunset again. Oddly
    12 KB (2,189 words) - 19:29, 5 October 2013
  • The light sensitive area is the square about 1 cm on a side. It is under a protective glass cover, and attaches to the ...oss. When a photon (a light particle) arrives near one of these, there is about a 50% chance that it will excite an electron that will be trapped in the pi
    16 KB (2,898 words) - 07:14, 8 March 2016
  • ...the computer that is hosting the program, and the Internet or cloud. What about the other side, the user's perspective on computing?
    22 KB (3,449 words) - 07:02, 17 April 2018
  • ...f it were seen at a distance of 10 parsecs, 32 light years. To learn more about RR Lyrae stars you can read the [http://en.wikipedia.org/wiki/RR_Lyrae Wiki
    16 KB (2,713 words) - 02:21, 3 October 2015
  • ...ystem has been under development for a decade and is mature. You can read about it and even preview its capabilities on the web. Keep in mind if you decid ...docs.python.org/2/faq/windows.html "frequently asked question" (FAQ) page] about Python on Windows to help you at first, and also consult [http://docs.pytho
    18 KB (2,913 words) - 22:26, 7 July 2018
  • ...or], who follows Orion across the sky each winter night. The [http://space.about.com/od/stars/p/siriusinfo.htm brightest star] in our sky is '''Sirius''', o ...ne [http://en.wikipedia.org/wiki/Astronomical_unit astronomical unit] (AU) about 150,000,000 km or '''8 light minutes'''.
    18 KB (3,104 words) - 23:06, 27 February 2012
  • ...wiki/Earth_observation_satellite website on Wikipedia] with links to pages about them. The weather satellites are operated by many different countries and ...ed as a short duration (100 days for science) mission designed to find out about the dust that is near the Moon's surface. When that phase was over in Apri
    7 KB (1,196 words) - 03:03, 24 July 2014

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