NASA – To celebrate the 21st anniversary of the Hubble Space Telescope’s deployment into space, astronomers at the Space Telescope Science Institute in Baltimore, Md., pointed Hubble’s eye at an especially photogenic pair of interacting galaxies called Arp 273. The larger of the spiral galaxies, known as UGC 1810, has a disk that is distorted into a rose-like shape by the gravitational tidal pull of the companion galaxy below it, known as UGC 1813. This image is a composite of Hubble Wide Field Camera 3 data taken on December 17, 2010, with three separate filters that allow a broad range of wavelengths covering the ultraviolet, blue, and red portions of the spectrum.
Hubble was launched April 24, 1990, aboard Discovery’s STS-31 mission. Hubble discoveries revolutionized nearly all areas of current astronomical research from planetary science to cosmology.
“For 21 years, Hubble has profoundly changed our view of the universe, allowing us to see deep into the past while opening our eyes to the majesty and wonders around us,” NASA Administrator Charles Bolden said.”I was privileged to pilot space shuttle Discovery as it deployed Hubble. After all this time, new Hubble images still inspire awe and are a testament to the extraordinary work of the many people behind the world’s most famous observatory.” more> http://tinyurl.com/3wpnjby
Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
By Cecil L. Smith – It’s increasingly popular to team a centrifugal pump with a variable speed drive (VSD) rather than couple a constant speed pump with a control valve on the discharge. However, many engineers don’t understand a VSD’s impact on flow and how that affects control.
A pump/control-valve combination provides smooth flow even at very small valve openings, although in some cases protection against low flow is required. However, with variable speed pumping, flow isn’t always smooth at reduced speeds due to either the pump or the drive. more> http://tinyurl.com/42ttfle
By Dennis Crouch – The U.S. Patent System moved one step closer to a major overhaul. On Thursday, April 14, the Judiciary Committee of the House of Representatives voted 32-3 in favor of the America Invents Act (Patent Reform Act of 2011). more> http://tinyurl.com/44n4kj8
By David Wroe and Kathleen E. McLaughlin – Europe’s biggest economy doubled its investment last year to reach $41.2 billion. In doing so, it bumped the United States out of second place as an investor in clean energy technology, according to a recent Pew Charitable Trusts report that shows America is in danger of slipping behind.
The observation among experts in the field is unanimous: The United States offers potential green investors uncertainty while countries like Germany and China have sent clear signals that they support such technology. more> http://tinyurl.com/3pcskus
Pew: Global Clean Energy Race
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