Sunday, May 25, 2008

Cool Stuff

Each home packs flat and can be assembled by four people with a screwdriver and awl (both tools are shipped with the structure). Buyers can add multiple features on to the original 10x12 foot structure, including a kitchen, bathroom, window-walls, and closets. The lightweight steel framework and corrugated walls can be easily disassembled and transported. Though the prototype's components are currently made in the U.S., BSC Designs is negotiating local production with South African manufacturers. The projected cost is $1500 a piece. Link

As my grandfather would say.."bout as useless as tits on a boar."

Moon Explosions

I love space stuff, ever since I was a kid

Since 2005, NASA has observed 100 explosions on the surface of the Moon. The big booms, usually equivalent to a few hundred pounds of TNT, are caused by meteoroids smashing into the Moon's surface. The flashes of the bigger impacts are easily spotted by amateur astronomers on Earth using a backyard telescope. NASA launched the monitoring program in response to the recent plans to send humans back to the Moon.
These explosions don't require oxygen or combustion. Meteoroids hit the moon with tremendous kinetic energy, traveling 30,000 mph or faster. "At that speed, even a pebble can blast a crater several feet wide. The impact heats up rocks and soil on the lunar surface hot enough to glow like molten lava — hence the flash..."Fortunately, says (the head of NASA's Meteoroid Environment Office, Bill) Cooke, astronauts are in little danger. "The odds of a direct hit are negligible. If, however, we start building big lunar outposts with lots of surface area, we'll have to carefully consider these statistics and bear in mind the odds of a structure getting hit." Secondary impacts are the greater concern. When meteoroids strike the Moon, debris goes flying in all directions. A single meteoroid produces a spray consisting of thousands of "secondary" particles all traveling at bullet-like velocities. This could be a problem because, while the odds of a direct hit are low, the odds of a secondary hit may be significantly greater. "Secondary particles smaller than a millimeter could pierce a spacesuit," notes Cooke.

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