9/19/11

"A five tonne, 20-year-old satellite has fallen out of orbit and is expected to crash somewhere on Earth"

"Nasa says the risk to life from the UARS - Upper Atmosphere Research Satellite - is just 1 in 3,200."

"The 1 in 3,200 risk to public safety is higher than the 1 in 10,000 limit that Nasa aims for."


BBC
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