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Decades-Old Soviet Reflector Spotted On the Moon

cremeglace writes "No one had seen a laser reflector that Soviet scientists had left on the moon almost 40 years ago, despite years of searching. Turns out searchers had been looking kilometers in the wrong direction. On 22 April, a team of physicists finally saw an incredibly faint flash from the reflector, which was ferried across the lunar surface by the Lunokhod 1 rover. The find comes thanks to NASA's Lunar Reconnaissance Orbiter, which last month imaged a large area where the rover was reported to have been left. Then the researchers, led by Tom Murphy of the University of California, San Diego, could search one football-field-size area at a time until they got a reflection."

33 of 147 comments (clear)

  1. Turns out... by Kell+Bengal · · Score: 5, Funny

    ... it was on the moon the whole time.

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    1. Re:Turns out... by jtownatpunk.net · · Score: 2, Funny

      It's always in the last place you look.

  2. Re:Why is this a surprise? by Scarletdown · · Score: 5, Funny

    In Soviet Russia...

    Nah, too obvious.

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    This space unintentionally left blank.
  3. Re:Why is this a surprise? by MoonBuggy · · Score: 2, Insightful

    Well if they'd been looking kilometres in the wrong direction, it implies that there wasn't a precise record of its position!

  4. footbal-field sized by doti · · Score: 2, Funny

    is this an imperial unit or what?

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    factor 966971: 966971
    1. Re:footbal-field sized by Nidi62 · · Score: 2, Funny

      Well, metric would have been pitch, wouldn't it?

      --
      The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
    2. Re:footbal-field sized by roman_mir · · Score: 2, Funny

      African or European unit?

    3. Re:footbal-field sized by rickb928 · · Score: 2, Interesting

      American Football is played on a field 360 by 160 feet, or 109.72m by 48.77m, or 5351.04sq.m. Some of the length is end zones.

      IFBA declared a fixed size for a pitch of 105m long and 68m wide, which is 7140 sq.m, instead of instead of a minimum and maximum length - from 100m to 110m - and a minimum and a maximum width - from 64m to 75m. So the olde standard allowed fields from 6400 to 8250 sq.m.

      So an American Football field would be from 750 millisoccerfields to 650 millisoccerfields.

      Or a pitch would be from 1540 millisoccerfields to 1200 millisoccerfields.

      American Football is always played on a narrower, but sometimes longer, field. However, we rarely think of the end zones as playable area, so think of a football field here as 100 yards long. And if you're playing soccer on an American Football field, it *is* about 100 yards long, as the goalposts rarely are moved, and you usually end up giving up most of the end zones. This and the narrow fields many U.S. high schools have available really stunts play, as width is so important in soccer. I would take a 90m field that was 60m wide over a 100m field that was 48m wide.

      It immediately caught me that someone somewhere thought an American Football field was larger than a soccer pitch. this is just not so.

      Now, hockey was even more interesting to me, where rink size varied greatly. The Montreal Forum had a huge sheet, and they preferred skaters such as Guy LeFler, who could drive you crazy trying to find them, much less check them. The old Boston garden had a small sheet, with tight radius corners. Going into the Bruins' corners with any of the old-style Bruins defensemen coming in pretty much guaranteed you were going to be squashed like a bug. Some old Bruins used to talk of Bobby Orr's stickhandling as playing ping-pong in a phone booth. In the Forum, this was still important, but trying to crash the boards in the Forum often got you nothing but boards.

      In sports, for sure, size does matter.

      --
      deleting the extra space after periods so i can stay relevant, yeah.
  5. Re:Why is this a surprise? by roman_mir · · Score: 3, Funny

    My god, your logic is impeccable!

    I believe that this story is very informative and that we all will get very insightful comments from everyone involved, and some of the posts will be funny, while others may be somewhat redundant, however there always will be a few underrated and overrated commentators, but it is all good as long as it does not lead to any flamebait here. Of-course Trolls are welcome to join the conversation, just as per usual arrangement.

    Oh, and the Anonymous Cowards... I see you, I see you and your reflections in the Moon.

  6. Re:Why is this a surprise? by jandoedel · · Score: 3, Interesting

    or maybe they had a very precise, but inaccurate record of the position.

  7. now we are six by at10u8 · · Score: 4, Informative

    This means there are now six useable reflectors. See the list from the investigators.

    1. Re:now we are six by Spatial · · Score: 2, Insightful

      Those laser ranging retroreflectors were put on the Moon by aliens.

      It's obvious really. If they weren't then my conspiracy theories about the Moon landings would be proven false. And that's physically impossible, because they're true!

    2. Re:now we are six by sznupi · · Score: 3, Informative

      The list to which you linked to includes Lunokhod 2. There are five, now all usable.

      --
      One that hath name thou can not otter
  8. Re:US left a corner reflector as well by EvanED · · Score: 5, Insightful

    This I always felt was the best proof that humans were on the moon, as opposed to say that the whole thing was faked in a movie studio.

    Eh, personally, I think that's not a very good argument. This soviet thing is as much a counterargument as anything -- the Soviets have one on the moon, but they didn't send anyone. Probes can place reflectors.

    The best argument for the moon landing IMO is the scrutiny the Soviets would have had to put into it. They would have been able to pick up telemetry and the transmissions from the craft (hell, amateurs were able to see the Apollo ships through telescopes) during the flight.

    Long story short: we sent something of the right size to the moon, landed it there, and brought it back, and it was transmitting what we said it was transmitting. You can concoct some half-baked explanation of us sending up a recording or something like that (actually a recording wouldn't work as they transmitted time-sensitive information, so you'd have to say that NASA was transmitting a hidden stream to the craft what they would transmit back), but IMO by the time you get to this point it seems like the hard parts of Apollo were basically done.

  9. Re:Why is this a surprise? by LWATCDR · · Score: 2, Informative

    But it could have been damaged by the environment. The thermal cycling is pretty extreme on the moon.

    --
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  10. Re:why bother ? by SgtAaron · · Score: 2, Interesting

    There are other mirrors up there. why actually search for this one ?

    FTFA: Now the team can eventually pin down the changing shape of the lunar orbit to the millimeter to help test Einstein’s theory of general relativity.

    There might be other reflective things on the moon, but I assume that this one is somehow special. I at least *hope* that the people searching for it know what they are doing :p

    There are certainly other reflectors out there on the moon, that could and have been used for measuring the moon's distance--and for some time now. I can't imagine what could be special about this one, except for the quality, perhaps? Nah. What if it's not kosher for others to shoot lasers at the reflectors that other scientists use? The article ends there and is skimpy on details.

  11. In Soviet Luna... by Anonymous Coward · · Score: 2, Funny

    ...reflector dish spots YOU!!!

  12. cool. by mirix · · Score: 4, Interesting

    Every time I see pictures of the soviet rovers, I can't help but think how bizarre the things look. Like a combination of a bathtub and a baby carriage.

    wiki article about one of the rovers.

    I found it neat that it had some decaying isotope, and a lid, to close and keep the internals warm during lunar night. Too bad they didn't have lithium ion batteries back then eh? Not sure what they used, but 1970's era rechargeable batteries tend to suck period.

    The wheels are especially weird looking, like something from a nightmare.
    wheel closeup picture

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    Sent from my PDP-11
  13. Re:US left a corner reflector as well by Beardo+the+Bearded · · Score: 5, Funny

    The moon landing was a fake, but it was filmed on the moon. They didn't want you to know that we've had a moon base since 1964.

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    ECHELON is a government program to find words like bomb, jihad, plutonium, assassinate, and anarchy.
  14. SETI is HARD by renrutal · · Score: 5, Insightful

    If you take decades to find a reflector in the nearest astral body, it quite puts in perspective the whole difficulty of searching for extraterrestrial life light-years away.

  15. Re:US left a corner reflector as well by Monkeedude1212 · · Score: 4, Funny

    No you dummy, it was a soundstage on mars.

  16. Re:why bother ? by sznupi · · Score: 4, Informative

    Lunokhod 2 is in the most northerly position out of all available retroreflectors on the Moon, which will contribute to much more precise data about the Moon "wobble" (since the distance of Lunokhod 2 is greatly affected by it, in comparison to something near the center of the view from Earth)

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    One that hath name thou can not otter
  17. Re:Why is this a surprise? by Anomalyst · · Score: 4, Funny

    thermal cycling is pretty extreme on the moon.

    Well, of course, with only 1/6 gravity, using an off the shelf standard velodrome construction, the banking on the track would be totally out of whack.

    --
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  18. Re:US left a corner reflector as well by RobTerrell · · Score: 3, Funny

    It's all true:

    http://www.vgg.com/tr/tr_102201_moon.html

  19. Re:US left a corner reflector as well by CohibaVancouver · · Score: 3, Interesting

    The best argument for the moon landing IMO is the scrutiny the Soviets would have had to put into it

    For me the best arguement is the fact that it's forty years later and no one has made a deathbed confession that they worked on faking the landing. To fake it you would have needed many many many people to keep a secret for 40 years. Impossible IMO.

  20. Zapped by pgn674 · · Score: 3, Funny

    They find it, and what do they do first? Zap it with a laser. No wonder it was hiding!

  21. Re:US left a corner reflector as well by Dishevel · · Score: 2, Funny

    Thank God they were there too. If not for the film crew that day the nuclear waste dump on the far side of the moon would have gone supercritical and possibly launched the moon and all that was on it deep into space.

    --
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  22. Re:Why is this a surprise? by AstrumPreliator · · Score: 5, Funny

    To expand upon this a bit I can say that Pi = 5.981734819456272. As you can see I am very precise however, I am not at all accurate.

  23. Re:US left a corner reflector as well by konohitowa · · Score: 4, Funny

    I still don't know why the fact that Soviets haven't said anything doesn't convince them. They were technologically in a position to absolutely and horribly shame the United States if no human beings actually travelled to the moon. But nothing of the sort was ever claimed by them.

    That's because we game them Nikola Tesla and the location of Atlantis in exchange for their silence on the matter. I'm not sure what we gave them to keep quiet about 9/11; perhaps the location of Tesla's base on Mars after he escaped from Earth.

  24. Re:Ignore the disinfo agents. Here's how it works by oatworm · · Score: 3, Funny

    I'm going to ask my boss for a purchase order. The only item on that purchase order will be for a sufficient quantity of whatever this guy's smoking to get the rest of the office to stop asking me why Verizon blew up our office phone service again.

    That is all.

  25. Re:US left a corner reflector as well by Anonymous Coward · · Score: 5, Funny

    Nazis always say that..

  26. Yeah ! Finally ! by mbone · · Score: 2, Informative

    This is way cool. The LLR (Lunar Last Ranging) people have been looking for this for a long, long time.

    This (by providing a new fiducial point on the Moon) will significantly help Lunar geodesy.

    Note, by the way, that LLR returns are always exactly 1 photon per shot, so this flash was no fainter than any other LLR return.

  27. Re:In Soviet Russia by Kerckhoffs+Principle · · Score: 2, Insightful

    Their space program pretty much sucked.

    Well, considering the fact that they : - launched the first satellite in space - shot the first animal in space - had the first man in space - reached the moon first (Luna I & II) I'd have to agree with you that their program obviously sucked!