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Tag: Blue

NASA chooses SpaceX, Blue Origin to build Artemis human lunar landers

NASA chooses SpaceX, Blue Origin to build Artemis human lunar landers

Science
April 30 (UPI) -- SpaceX, Blue Origin and Huntsville, Ala.-based Dynetics will build human lunar landing systems for its planned Artemis moon landing program, NASA announced Thursday. Artemis is a mission to land the first woman and next man on the surface of the moon by 2024. The total combined value for all awarded contracts is $ 967 million for the 10-month base period. "This is the first time since the Apollo era that NASA has direct funding for a human landing system, and now we have companies on contract to do the work for the Artemis program," NASA Administrator Jim Bridenstine said. According to NASA, Blue Origin of Kent, Wash., will develop a three-stage lander to be launched on its own New Glenn rocket and the United Launch Alliance Vulcan rocket. Both rockets are being develop...
Climate change: Blue skies pushed Greenland ‘into the red’

Climate change: Blue skies pushed Greenland ‘into the red’

Science
While high temperatures were critical to the melting seen in Greenland last year, scientists say that clear blue skies also played a key role. In a study, they found that a record number of cloud free days saw more sunlight hit the surface while snowfall was also reduced.These conditions were due to wobbles in the fast moving jet stream air current that also trapped heat over Europe. As a result, Greenland's ice sheet lost an estimated 600 billion tonnes.Current climate models don't include the impact of the wandering jet stream say the authors, and may be underestimating the impact of warming.Greenland's ice sheet is seven times the area of the UK and up to 2-3km thick in places. It stores so much frozen water that if the whole...
‘Astonishing’ blue whale numbers at South Georgia

‘Astonishing’ blue whale numbers at South Georgia

Science
Scientists say they have seen a remarkable collection of blue whales in the coastal waters around the UK sub-Antarctic island of South Georgia.Their 23-day survey counted 55 animals - a total that is unprecedented in the decades since commercial whaling ended.South Georgia was the epicentre for hunting in the early 20th Century. The territory's boats with their steam-powered harpoons were pivotal in reducing Antarctic blues to just a few hundred individuals.To witness 55 of them now return to what was once a pre-eminent feeding ground for the population has been described as "truly, truly amazing" by cetacean specialist Dr Trevor Branch from the University of Washington, Seattle. "To think that in a period of 40 or 50 years, I ...
New silicon device converts blue photons into red photons

New silicon device converts blue photons into red photons

Science
Dec. 2 (UPI) -- Researchers have developed a new hybrid device -- pairing silicon with organic, carbon-based molecules -- that can convert blue photons into red photons, paving the way for more efficient solar energy conversion. Silicon's electronic properties make it a popular choice for a variety of technologies. The material, one of Earth's most abundant, is used to make everything from semiconductors to solar cells. But silicon isn't great at turning light into electricity. While silicon can convert red photons into electricity just fine, its attempts to convert blue photons, which carry twice as much energy as red photons, yields mostly wasted thermal energy. For the new device, engineers paired silicon with a carbon-based material called anthracene that converts blue photons into r...