Original URL: http://www.theregister.co.uk/2011/07/26/probe_found_on_moon/

Lost 1967 spacecraft FOUND CRASHED ON MOON

Probe wrecked on farside snapped 'the pic of the century'

By Lewis Page

Posted in Science, 26th July 2011 09:30 GMT

NASA scientists believe they may have found the final resting place of a 1960s space probe which took "the picture of the [last] century" before crashlanding on the far side of the Moon.

A snapshot from the past... (click to enlarge)

The information comes in new imagery from the Lunar Reconnaissance Orbiter (LRO), sent up to circle the Moon under the Bush administration's plan for a manned return to our satellite body as a precursor to Mars missions. The LRO was intended to map the lunar surface in unprecedented detail, perhaps discovering useful ice deposits or crater-rim landing sites where solar power would be available year round.

All that became rather moot when Congress refused to fund the ambitious Moonbase plans and president Obama duly axed them. But the LRO has nonetheless produced many fascinating finds: and now, NASA boffins operating it believe they may have discovered the crash site of a previous Moon-recce craft called Lunar Orbiter 2.

Lunar Orbiter 2 had a similar mission to the LRO, in that it was sent up to help with selection of landing sites for the Apollo moon missions – many of which actually happened, unlike the recently-cancelled Constellation ones. However the instrumentation of the day was far less sophisticated than the LRO's and as all students of space history will know the first landing – by Apollo 11 in 1969 – almost ended in disaster as the lunar module's autopilot tried to set it down in a dangerous field of boulders, forcing a hairy manual intervention by Neil Armstrong and Buzz Aldrin when just 400 feet up.

Despite not being a total success in the matter of moon mapping, Lunar Orbiter 2 did achieve lasting fame when it sent back a stunning oblique image of the Copernicus crater in 1967 (above), dubbed "the picture of the century" by news media at the time. Later that year, its mission complete, the Orbiter was disposed of by commanding it to crashland on the lunar farside. Its exact resting place has never been known, but now the operators of the LROC have found what they believe is a tell-tale impact site just at the coordinates where the Orbiter should have come down.

crater

Could this be the impact site?

It's not yet certain that this marks the last resting place of the greatest robot photographer of the last century, but the LRO scientists are working on confirmation.

"We are currently re-targeting the area under a higher incidence angle to help with crater rim measurements. Stay tuned!" they write. ®