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Higgs boson: landmark announcement clears key hurdle - 0 views

phys.org/...boson-landmark-key-hurdle.html

scibyte62 scibyte63 HiggsBoson

shared by Mars Base on 10 Sep 12 - No Cached
  • The announcement two months ago that physicists have discovered a particle consistent with the famous Higgs boson cleared a formal hurdle on Monday with publication in a peer-reviewed journal.
  • Although CERN's announcement was never doubted, it still had to be vetted by peers and then published in an established journal to meet benchmarks of accuracy and openness.
  • Further work is being carried out to confirm whether the new particle is the famous Higgs
Mars Base

Mars Clays May Have Volcanic Source - Science News - 0 views

www.sciencenews.org/...clays_may_have_volcanic_source

scibyte63 mars

shared by Mars Base on 10 Sep 12 - No Cached
  • Ancient clay deposits on Mars may not indicate that the Red Planet was originally a warm, wet place, as scientists have thought. Instead of needing liquid water to form, many of Mars’ 4-billion-year-old clays could have originated from cooling lava, researchers report
  • last year, some researchers suggested that underground hydrothermal activity provided the water that is necessary to form the clays
  • “We’re not saying all clays on Mars formed by this process,” says coauthor Bethany Ehlmann, a planetary geologist at Caltech. However, “if most clays formed by a magmatic process, it says maybe water wasn’t so available on early Mars.”
  • ...13 more annotations...
  • ow there’s another suggestion: Crystallizing lava may have contained tiny pockets where water could react with other chemicals to make small amounts of iron- and magnesium-rich clay. No additional water flowing on the surface or belowground would be needed. So early Mars could have been a largely cold, dry world
  • not saying all clays on Mars formed by this process
  • “if most clays formed by a magmatic process, it says maybe water wasn’t so available on early Mars
  • researchers investigated the cooling-lava scenario because some Martian clays don’t appear to fit with previous explanations
  • Some Martian meteorites contain clay minerals with hydrogen isotope compositions characteristic of water coming from Mars’ mantle and carried in lava — not from the atmosphere or surface — suggesting water-rich lava has produced some Martian clay.
  • The researchers also looked at clay deposits from French Polynesia’s Mururoa Atoll in the Pacific Ocean that formed from cooling lava
  • This clay reflects the same wavelengths of infrared light as Martian deposits
  • suggesting that both have similar mineralogical properties and thus probably formed in the same way.
  • team says cooling lava can account for the most geographically abundant Noachian clay minerals
  • that doesn’t mean water didn’t flow on the surface during brief episodes
  • evidenced by the planet’s ancient river valleys, says coauthor
  • Ehlmann says scientists need to find a spot on Mars where Noachian-aged clay is found so that all three proposed clay-forming mechanisms can be tested
  • where NASA’s Curiosity landed is not a good test location because the clays there are slightly younger and are clearly part of a sedimentary
  • Mars Base on 10 Sep 12
     
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Mars Base

Space Shuttle Endeavour Taking Cross-Country Flight for Display | Space.com - 0 views

www.space.com/ur-museum-flight-schedule.html

scibyte62 scibyte63 scibyte67 shuttle

shared by Mars Base on 07 Sep 12 - No Cached
  • The trip is set to begin on Sept. 17, weather permitting, at NASA's Kennedy Space Center in Cape Canaveral, Fla., and culminate at Los Angeles International Airport (LAX) on Sept. 20
  • The carrier aircraft will arrive at Kennedy Space Center on Sept. 11
  • Three days later, the orbiter will be rolled out to meet the SCA at the Shuttle Landing Facility (SLF), where Endeavour returned to Earth for its 25th and final time in the early morning hours of June 1, 2011
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  • Endeavour will be hoisted off the ground by crane
  • then be lowered onto the SCA's back and secured for flight
  • Coordinating with the Federal Aviation Administration, the SCA will perform low flyovers — as low as 1,500 feet (457 meters) — as it passes NASA's Stennis Space Center in Mississippi and the agency's Michoud Assembly Facility in New Orleans.
  • low passes over areas around Houston, Clear Lake and Galveston in Texas before making a landing at Ellington Field near NASA's Johnson Space Center.
  • Weather permitting, the SCA and Endeavour will remain at Ellington for the remainder of the day and all day on Sept. 18, providing Johnson employees and the Houston public an ample opportunity to see the shuttle.
  • take to the air again at sunrise on Sept. 19, and after a brief refueling stop at Biggs Army Airfield in El Paso, Texas
  • low-level flyovers of White Sands Test Facility near Las Cruces, N.M., and Dryden Flight Research Center at Edwards Air Force Base in California
  • morning of Sept. 20
  • Finally on the morning of Sept. 20, Endeavour, still on top of the SCA, will take off one last time, departing Dryden to fly over Northern California, passing above NASA's Ames Research Center at Moffett Field and various landmarks in multiple cities, including San Francisco and Sacramento, the state's capitol
  • The carrier aircraft will fly near
  • , the Jet Propulsion Laboratory in Pasadena before performing flyovers over many Los Angeles landmarks on its way to a landing at LAX
  • According to NASA, some of the flyovers or layovers that are planned could be delayed or cancelled as a result
  • flies over seven states and eight of NASA's facilities
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