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Super-Cool Planck Mission Begins to Warm
from BBC News Online
One of Europe's great astronomical ventures is coming to a close. The Planck telescope, put in space to map the oldest light in the Universe, has run out of the helium coolant that keeps it in full working order.
Engineers expect the observatory's systems to start to warm from their ultra-frigid state in the coming days, blinding one of its two instruments.
Nonetheless, Planck has gathered more than enough data since its launch in 2009 to complete its mission goals.
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