http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (AP) -- Four years after its first solar sail ended up in the ocean instead of orbit, The Planetary Society announced Monday that by the end of 2010 it will try again to launch a spacecraft that will be propelled by the subtle pressure of sunlight. http://www.physorg.com/news177020675.html Space & Earth Mon, 09 Nov 2009 21:00:01 EST news177020675 Shape memory alloys can "remember" a condition. If they are deformed, a temperature change can be enough to bring them back to their original shape. A simulation calculates the characteristics of these materials. http://www.physorg.com/news166718002.html Technology Mon, 13 Jul 2009 15:34:10 EST news166718002 (PhysOrg.com) -- NASA will fly two nanosatellites as secondary payloads aboard the SpaceX Falcon 1 rocket planned for launch in August or September. http://www.physorg.com/news136816146.html Space & Earth Fri, 01 Aug 2008 13:29:06 EST news136816146 sō`lar sāil, n. - A gossamer material that, when unfurled in the vacuum of space, feels the pressure of sunlight and propelled by said pressure may carry a ship among the stars. http://www.physorg.com/news136810834.html Space & Earth Fri, 01 Aug 2008 12:00:34 EST news136810834 "Hold your hands out to the sun. What do you feel? Heat, of course. But there's pressure as well - though you've never noticed it, because it's so tiny. Over the area of your hands, it only comes to about a millionth of an ounce. But out in space, even a pressure as small as that can be important - for it's acting all the time, hour after hour, day after day. Unlike rocket fuel, it's free and unlimited. If we want to, we can use it; we can build sails to catch the radiation blowing from the sun." http://www.physorg.com/news133794632.html Space & Earth Fri, 27 Jun 2008 14:10:32 EST news133794632