SPACE PHOTOS THIS WEEK: Saturn Equinox, Milky Way, More

SPACE PHOTOS THIS WEEK: Saturn Equinox, Milky Way, More
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September 17, 2009--New temperature readings of the moon's south pole during the day (left) and at night have uncovered some of the coldest temperatures in our solar system. In the permanent shadows of some of the pole's craters, daytime temperatures can be lower than -397 degrees Fahrenheit (-238 degrees Celsius)—more frigid even than Pluto.

NASA's Lunar Reconnaissance Orbiter captured the data during its continuing survey of the entire lunar surface. The orbiter's new proof of eternally shaded, never melted regions "greatly increases the likelihood that water or other compounds are frozen there," said Ashwin Vasavada from NASA's Jet Propulsion Laboratory, in a statement.
—Image courtesy UCLA/JPL/NASA
 
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