The chance that even one person will be struck by a piece of UARS
debris is one in 3,200, NASA says.
Sleep hygiene and avoidance of alcohol and drugs prevent exacerbation of OSA and UARS
rather than treating the underlying disorder.
was deployed in 1991 from the space shuttle Discovery on a mission to study the Earth's upper atmosphere.
2] This scale provides some quantitation of the likelihood of OSA or UARS
scientists say ozone-rich air from the tropics may penetrate into the polar region, masking any early ozone destruction.
They say ROSAT's pieces are almost three times heavier than the biggest chunk of UARS
US blogger Perez Hilton tweeted "Breaking News: @ladygaga's next dress will be made with the debris of UARS
sensors are not designed for long-term monitoring of ozone concentrations; rather, they will help scientists study the processes that control ozone levels.
The satellite was passing eastward over Canada and Africa as well as vast portions of the Pacific, Atlantic and Indian oceans during that period," the Telegraph quoted NASA saying in a statement on the UARS
Expected to operate for three years, UARS
will carry nine instruments to compile a planet-wide data base about the chemistry and motions of the upper atmosphere, the effects of the sun's radiation on the upper atmosphere, and changes in the amount and distribution of ozone and other atmospheric gases.
NASA's Upper Atmosphere Research Satellite, or UARS
, ended its productive scientific life almost six years ago.
could land anywhere between 57 degrees north and 57 degrees south of the equator - where much of the populated world lies.