Astronomy & Physics
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An analysis of a rock sample collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes. Scientists identified sulfur, nitrogen, hydrogen, oxygen, phosphorus and carbon -- some of the key chemical ingredients for life -- in the powder Curiosity drilled out of a sedimentary rock near an ancient stream bed in Gale Crater on the Red Planet last month. Curiosity's drill collected the sample at a site just a few hundred yards away from where the rover earlier found the ancient streambed in September 2012. Continue reading "News Alert: NASA's Finds "New 'Gray Mars' Where Conditions Once were Favorable for Life"" » NASA's Wide-field Infrared Survey Explorer (WISE) has discovered a pair of stars that has taken over the title for the third-closest star system to the sun. The duo is the closest star system discovered since 1916.
We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from http://get.adobe.com/flashplayer/ . The categories are:
Click-drag green circle to pan around the whole image. The Ultra Deep Field obtained by the Hubble Space Telescope is the deepest view into the sky by humankind to date. This image combines 800 frames with a total exposure time of 1 million seconds. The 10.000 galaxies that are visible have distances out to times where the universe was just 800 million years old, one seventeenth of its current age. For more info check the UDF press release at spacetelescope.org . For a wider but less deep view visit the GEMS Skywalker .
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