In 1967, NASA’s Surveyor 3 probe landed on the moon and fell silent, and two and a half years later Apollo 12 touched down simply 600 toes away so two astronauts may stroll over, {photograph} it and lower off its digicam to hold again to Earth

In April 1967, a robotic NASA lander known as Surveyor 3 settled onto the Ocean of Storms, scooped on the lunar soil, despatched dwelling greater than 6,000 pictures, after which went quiet because the two-week lunar night time fell. It was by no means heard from once more.

Two and a half years later, a spacecraft with two males aboard got here down out of the black sky and landed shut sufficient to stroll to it.

The pinpoint touchdown

That closeness was the entire level of the mission. Four months earlier, Apollo 11 had made historical past however missed its goal zone by about 4 miles. For Apollo 12, NASA wished to show it may put a crew down on a exact spot — the distinction between “we reached the moon” and “we can land wherever the science is.”

They selected the toughest attainable goal: the precise patch of the Ocean of Storms the place Surveyor 3 sat. On November 19, 1969, Commander Pete Conrad and Lunar Module Pilot Alan Bean introduced the module Intrepid down and parked it, by NASA’s personal measure, about 600 toes from the previous probe — a bullseye throughout a quarter-million miles. Surveyor 3, because it occurred, was resting on the interior slope of a small crater, and the astronauts had landed close to its rim.

Two spacecraft, one {photograph}

On their second moonwalk, Conrad and Bean hiked down into the crater to the silent lander, changing into, in impact, the primary house archaeologists — people visiting a machine that had reached one other world earlier than them. It stays the one time it has ever occurred.

They took “tourist” images beside it, then documented it correctly from each angle, and one picture from that day is quietly astonishing: two American spacecraft sitting collectively on the floor of the moon, the lifeless robotic within the foreground and Intrepid, the crew’s trip dwelling, on the horizon behind it. Nobody had ever photographed two of humanity’s autos parked on one other world, as a result of there had by no means been two in the identical place.

The males seen one thing odd straight away. Surveyor had left Earth gleaming white; now it seemed tan, virtually brown. Bean assumed the colour had modified — till they rubbed it and located the reality beneath. It wasn’t discolored. It was filthy: coated in a superb movie of lunar mud, a lot of it kicked up by Intrepid‘s personal descent engine touchdown close by. Under the grime the white paint was nonetheless brilliant.

Cutting off a chunk of the moon’s historical past

Then got here the job they’d educated for. Using cutters, Conrad eliminated items of Surveyor 3 to deliver dwelling — most significantly its tv digicam, together with its sampling scoop, lengths of cable and tubing, and different elements: about 22 kilos of a machine that had been sitting within the vacuum for 31 months.

The purpose was pure engineering curiosity. No one had ever recovered {hardware} after lengthy publicity to the lunar surroundings, and right here was a uncommon probability to seek out out what two and a half years of vacuum, radiation, micrometeorites and 200-below lunar nights truly do to a spacecraft. Back on Earth, on the Hughes and JPL labs, engineers took the digicam aside piece by piece to see what had survived. The reply, largely, was: all the things. The digicam had endured 947 days and dozens of brutal night-day cycles largely intact — invaluable knowledge for designing all the things that will fly afterward.

The stowaway that (most likely) wasn’t

Here is the place the story took a well-known, and cautionary, flip. When scientists cultured samples from contained in the returned digicam, they discovered one thing alive: Streptococcus mitis, a standard human mouth bacterium. The headline conclusion was electrical — the microbes had apparently survived two and a half years on the moon, and NASA publicized it as proof that life may endure the journey between worlds.

For a long time it was informed as reality. But later reviewers went again by way of the dealing with data and located the extra possible clarification was mundane and embarrassing: the digicam was virtually actually contaminated after it received again to Earth, by the very technicians analyzing it, whose clean-room protocols have been unfastened by fashionable requirements. The organism most likely by no means spent a day on the moon; it spent it in somebody’s mouth in a Houston lab. The “life survives on the moon” story is now thought to be more than likely a case of sloppy dealing with — a reminder of how simple it’s to seek out precisely the astonishing end result you have been hoping for.

That deflation doesn’t diminish the remainder. The core of the story is strong and unusual: a lifeless house probe with a two-and-a-half-year head begin, and a crewed mission aimed so exactly that two males may stroll over, take its image, and lower off its digicam with hand instruments. Surveyor 3’s tv digicam sits at present within the Smithsonian, the one object on Earth to have been carried to the moon by a robotic, left for 31 months, after which introduced dwelling by hand. It went up unmanned, waited alone by way of 32 lunar nights, and got here again as baggage.