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Showing posts with label Science.... Show all posts
Showing posts with label Science.... Show all posts

Enjoy an illustrated sonnet on the Higgs Boson-like particle



If this week's big particle physics discovery has you wanting to burst into verse, but you don't have a silver tongue, enjoy this sweet sonnet about the particle that might be the Higgs Boson. Vi Hart explains the news with markers and smiley faces. Memorize it for the next time someone asks you what a Higgs Boson is.
[via Boing Boing]

Scotland’s two mummified bog bodies are the Frankenstein remains of six different people







Britain's only prehistoric mummies resided in Cladh Hallan, only Scotland's South Uist island. They belong to a class of mummie known as "bog bodies," corpses naturally preserved in sphagnum bogs. A new discovery reveals that these mummies — one male and one female — aren't unusual just because they're British; they're also each made from the composite remains of multiple people.
Cladh Hallan mummy photo from the University of Sheffield.
The mummies, which were buried 300 to 600 years after their deaths, were discovered in 2001 below what were once the houses of Cladh Hallan, an 11th-century Scottish village. Archaeological researchers, including Terry Brown at the University of Manchester and Mike Parker Pearson of Sheffield University, have long noted abnormalities in the female skeleton, such as a jaw that didn't fit the rest of her skull, and decided to DNA test several of the bones to get a clearer sense of whom these mummies were made of. These turned up DNA from different people contained within each mummy — people who don't even share the same mother. The women who make up the female body appear to have died around the same time, while the men from the male body died a few hundred years apart.
The researchers aren't sure why the mummies were made from multiple bodies — or even if this was a deliberate merging of bodies or just an occasional replacing of body parts. But they do have a sense of the process, one in which the villagers tried to attach the bones together just as they would naturally appear on a single, intact body. Head over to National Geographic for more details on the preservation process of these mysterious melded mummies. A paper about the findings regarding the female skeleton will appear in August's Journal of Archaeological Science.
"Frankenstein" Bog Mummies Discovered in Scotland [National Geographic via reddit]

NASA calls this newly released photo of Mars “the next best thing to being there”











  Photo of Mars

 

 

 

Once in a great while, NASA's Opportunity rover will catch a glimpse of itself in a photograph of the Martian surface, but the photo featured up top — just released by NASA's Jet Propulsion Laboratory — offers an even rarer view of the Martian landscape, one that the Agency calls "the next best thing to being there."

What you see here is a small portion of a vast panorama — a composite image that combines a total of 817 photographs, taken between Dec. 21, 2011 and May 8, 2012, that features the rover and its surroundings during the most recent Martian winter. Taken together, they provide us with one of the most detailed views of Mars' ancient Endeavour Crater ever recorded. Click here for the full image in very, very high-resolution.
According to NASA:
"This scene recorded from the mast-mounted color camera includes the rover's own solar arrays and deck in the foreground, providing a sense of sitting on top of the rover and taking in the view. Its release this week coincides with two milestones: Opportunity completing its 3,000th Martian day on July 2, and NASA continuing past 15 years of robotic presence at Mars. Mars Pathfinder landed July 4, 1997. NASA's Mars Global Surveyor orbiter reached the planet while Pathfinder was still active, and Global Surveyor overlapped the active missions of the Mars Odyssey orbiter and Opportunity, both still in service."



Did you catch that? Opportunity has been on Mars for over 3,000 days — not bad at all for a little rover whose original mission called for a mere 90 days of exploration. [NASA | JPL]
'Ron Greeley was a valued colleague and friend, and this scene, with its beautiful wind-blown drifts and dunes, captures much of what Ron loved about Mars,' said Steve Squyres of Cornell University, principal investigator for Opportunity and Spirit.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Exploration Rover Project for the NASA Science Mission Directorate, Washington.
Later this year, the car-sized Curiosity Rover will land on Mars.
Unlike earlier rovers, Curiosity carries equipment to gather samples of rocks and soil, process them and distribute them to onboard test chambers inside analytical instruments.
It has a robotic arm which deploys two instruments, scoops soil, prepares and delivers samples for analytic instruments and brushes surfaces.
Its assignment is to investigate whether conditions have been favorable for microbial life and for preserving clues in the rocks about possible past life.
The goal of the mission is to assess whether the landing area has ever had or still has environmental conditions favorable to microbial life.
Curiosity will land near the foot of a layered mountain inside Gale crater, layers of this mountain contain minerals that form in water.
The portion of the crater floor where Curiosity will land has an alluvial fan likely formed by water-carried sediments.
Curiosity will also carry the most advanced load of scientific gear ever used on Mars’ surface, a more than 10 times as massive as those of earlier Mars rovers.
Curiosity is about twice as long and five times as heavy as NASA’s twin Mars Exploration Rovers, Spirit and Opportunity, launched in 2003.
  • Download the full-screen image from NASA's website