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The Russian Plan To Use Space Mirrors To Turn Night Into Day (vice.com)

merbs writes: Throughout the early 90s, a team of Russian astronomers and engineers were hellbent on literally turning night into day. By shining a giant mirror onto the earth from space, they figured they could bring sunlight to the depths of night, extending the workday, cutting back on lighting costs and allowing laborers to toil longer. If this sounds a bit like the plot of a Bond film, well, it's that too. The difference is that for a second there, the scientists, led by Vladimir Sergeevich Syromyatnikov, one of the most important astronautical engineers in history, actually pulled it off.

85 of 126 comments (clear)

  1. Insanity. by Anonymous Coward · · Score: 4, Insightful

    Has there been any thought given as to what this might do to the flora and fauna? Screwing up diurnal rhythms, mating seasons, migrations, etc. I mean seriously, this screams terrible idea.

    1. Re:Insanity. by captjc · · Score: 5, Funny

      Yeah, but just think of it, a 168 hour work week. People will no longer need to go home at night and can work 24/7! Think of all the profits!

      Plus the syndicates will finally be free of that menace, Batman. There is no Batman if there is no night time.

      --
      Slow Down Cowboy! It's been 1 hour, 47 minutes since you last successfully posted a comment
    2. Re:Insanity. by Rhacman · · Score: 1

      There is no Batman if there is no night time.

      "I am the damp-dreary-overcast-day!"

      --
      Account -> Discussions -> Disable Sigs
    3. Re:Insanity. by NotInHere · · Score: 1

      The move won't happen anymore, because it happened already. What you said above was an actual political issue of the early industrialisation, when humans figured out how to make light without having to kill whales, or lighting up candles or some larger fire. These methods were just bad, the versailles hall of mirrors room needed tons of candles in order to be properly lit.

    4. Re:Insanity. by wired_parrot · · Score: 4, Informative

      From the article, they were planning on lighting up urban areas only. The mirrors wouldn't be large enough to light up more than a city, and the light would only have been the equivalent of a bright moonlight. And cities already have electric illumination at night. So this would only be substituting current electric night time lighting in city centers with the reflected light, which would have the advantage of cutting energy costs. The idea was being pitched as an energy saving measure for city centers. It's not so terrible if limited to urban centers.

    5. Re:Insanity. by Darinbob · · Score: 1

      But beware of the marshall, because it's always High Noon.

    6. Re:Insanity. by Dusthead+Jr. · · Score: 1

      If I'm not mistaken that was one of the plot points in Batman and Robin. Using mirrors in orbit to thwart Mr Freeze's plans.

    7. Re:Insanity. by OrangeTide · · Score: 2

      As you get closer to the poles (higher latitude), the diurnal rhythms get a bit messed up, at least for non-native species like us humans. Long nights in the winter results in various health issues and depression. At around 60 N we're talking about only 4 hours of daylight, but a human is most comfortable at around 12 hours of daylight.

      --
      “Common sense is not so common.” — Voltaire
    8. Re:Insanity. by fche · · Score: 2

      Maybe not much. Each 200m-diameter mirror illuminating a 5700m-diameter area on the ground implies a 1:28 reduction of light intensity right there.

    9. Re:Insanity. by demonlapin · · Score: 4, Insightful

      Again, I don't know why you guys do this shit for megacorps. Some startup where you might become a billionaire? Hey, I can see killing yourself for a couple of those in your early 20s in hopes you hit the jackpot. But Microsoft? Hell, Google? They're already huge. They've already made their billionaires, and you weren't one of them. Get a job at a company that will pay you for working tolerable hours at a fair rate.

      This also goes a long way to explaining the difference in pay between flyover country and the coasts. "Oh, yeah, I pay more for the apartment, but I have a lot more disposable income"... and no time in which to spend it. I get nine weeks of paid vacation a year. You can have that when you pry it from my cold, dead hands.

    10. Re:Insanity. by Anonymous Coward · · Score: 2, Insightful

      From the article, they were planning on lighting up urban areas only. The mirrors wouldn't be large enough to light up more than a city, and the light would only have been the equivalent of a bright moonlight. And cities already have electric illumination at night. So this would only be substituting current electric night time lighting in city centers with the reflected light, which would have the advantage of cutting energy costs. The idea was being pitched as an energy saving measure for city centers. It's not so terrible if limited to urban centers.

      Sure it's not such a terrible energy saving measure...unless the cost to build the damn thing was eleventy bazillion dollars, sending your ROI into fucking orbit.

      Don't give a shit who you are or what your currency is. Space shit ain't cheap.

    11. Re:Insanity. by shaitand · · Score: 1

      The idea went down in flames and the brilliant engineer (who mankind owes a great deal for his contributions to space exploration) who was behind it died in 2006. This isn't really a news article so much as a "I bet you didn't know about" sort of thing.

      The modern offshoot of this plan is just massive solar generators in space. One of which would supposedly supply a third of the global energy consumption.

    12. Re:Insanity. by Gates82 · · Score: 4, Informative
      It would actually be a reduction of 812:1; given that the ratio between the area of two circles is ratio bewteen their diameters squared.

      --
      MGB

    13. Re:Insanity. by Impy+the+Impiuos+Imp · · Score: 2

      I used to work insane hours like that. Never helped me when downsizing came around. Work for your boss to climb? Never again.

      --
      (-1: Post disagrees with my already-settled worldview) is not a valid mod option.
    14. Re:Insanity. by fche · · Score: 1

      Good point, thanks.

    15. Re:Insanity. by kheldan · · Score: 1

      This should be called 'The Russian Plan to Make Global Warming Worse, Faster'. Of course what do they care? Anyone living in Vladivostok or Siberia probably welcomes global warming.

      --
      Are YOU using the TOOL, or is the TOOL using YOU? Think about it!
    16. Re:Insanity. by morphotomy · · Score: 1

      Arthur C Clark has a great write up on the subject.

    17. Re:Insanity. by painandgreed · · Score: 2

      Sure it's not such a terrible energy saving measure...unless the cost to build the damn thing was eleventy bazillion dollars, sending your ROI into fucking orbit.

      Don't give a shit who you are or what your currency is. Space shit ain't cheap.

      Some quick Googleing and I see that Boston, as an example, spends 8 million annually just on street lights and space X costs $100 to 260 million for a launch. Assuming a 20 year lifespan of the satellite, you end up with $160 million to mess around with. So it's not completely absurd that such a plan might pay for itself if it can be done with a single satellite that is cheap enough and lasts long enough. If doing multiple cities, there might be some savings in manufacture of satellites as they aren't all one offs.

    18. Re:Insanity. by Anonymous Coward · · Score: 1

      Unless the setting is changed, and the mirrors become concave...then Putin will burn his enemies with THE POWER OF THE SUN!

    19. Re:Insanity. by Gavagai80 · · Score: 5, Insightful

      Keep in mind that you can't stop maintaining the street lights and you'll have to use them a lot of nights, because space mirrors don't work when it's cloudy or foggy.

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      This space intentionally left blank
    20. Re:Insanity. by Circlotron · · Score: 1

      If these things are just re-purposed solar sails, how are they expected to stay put in orbit? Won't the sun just blow them away?

    21. Re:Insanity. by mysidia · · Score: 1

      They can avoid making global warming worse by diverting light AWAY from the part of the earth that is currently day, thus the results would be more global-warming neutral, AND the tradeoff for making it day 24x7 in one area is that it would be night 24x7 in another area.....

      May I suggest the state of California to be the location to have light diverted away from it, so it becomes nighttime 24x7 there?

    22. Re:Insanity. by shutdown+-p+now · · Score: 1

      The guy who is behind this thing is claiming that the entire system can be built and launched for under a billion.

      (Note that a single launch can launch several mirror satellites.)

    23. Re:Insanity. by Immerman · · Score: 1

      True, but compare to the coal-black moon, which offers a 1:1,000,000 reduction in light intensity when full, which is still enough light to barely enable color vision. 1:28 would be *bright*, probably brighter than most modern urban centers are currently lit.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    24. Re:Insanity. by CanadianMacFan · · Score: 1

      Plus with the move to LED street lighting the costs will go down.

    25. Re:Insanity. by Dynedain · · Score: 2

      That other $160M will probably need to be spent on the satellite itself (design, construction, monitoring, orbital adjustments, etc). There went the budget! Not to mention ruining your citizen's night vision even more than what they currently experience.

      Street lighting is a good solution as it can be installed only where necessary. Blanketing an entire city with uniform night time lighting is an incredible waste of resources.

      Now if it could be used for energy generation or telecommunications instead, then I think there's something to the idea.

      --
      I'm out of my mind right now, but feel free to leave a message.....
    26. Re:Insanity. by kheldan · · Score: 1

      I've actually heard of ideas to put stuff in the upper atmosphere (light enough to stay there) that would effectively raise the albedo of Earth, reflecting more sunlight back out into space. Not sure how practical it would be. There's also a short story by David Brin where an alien race used millions of small, steerable mirrors to induce an ice age on a planet they later wanted to colonize (they did this because the planet had a sentient species on it, and they weren't very nice aliens). Things like this aren't so totally far-fetched that they couldn't be done.

      --
      Are YOU using the TOOL, or is the TOOL using YOU? Think about it!
    27. Re:Insanity. by invictusvoyd · · Score: 1

      Space debris will ensure that "batman returns"

      _____________________________
      News at 9 : Space mirror shattered by wrench in orbit

    28. Re:Insanity. by AmiMoJo · · Score: 1

      space mirrors don't work when it's cloudy or foggy.

      They work just fine. When it's cloudy or foggy during the day, it doesn't go pitch black, does it? It just dims. So you have two mirrors, and when it's overcast you use the second one to give you more light to compensate.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    29. Re:Insanity. by bfpierce · · Score: 1

      Most of us live in giant illuminated cities, this is just illuminating these places from space instead of lots of little lights.

      I think you might be overthinking this a tad.

    30. Re:Insanity. by Aleksej · · Score: 1

      Anyone living in Vladivostok or Siberia probably welcomes global warming.

      Vladivostok seems to be a bad example there. It is only a few degrees colder than Moscow, and is a port.

    31. Re:Insanity. by JohnStock · · Score: 1

      Spoken like a true Ferengi

    32. Re:Insanity. by bored_engineer · · Score: 1

      *shrug* I live at 65 degrees north latitude, and am fine. I know of one or two people who have problems, but most here seem to get along well. In fact, people seem a little more odd in the summer, frenetically busy trying to soak up as much sun as possible. ;-)

    33. Re:Insanity. by OrangeTide · · Score: 1

      Your anecdotal evidence aside, seasonal affective disorder exists and while some people have no problems and others have only minor systems, there are numerous studies showing that as your move towards the equator the frequency of the condition in a population diminishes.
      Treatments of phototherapy are usually effective (but not always), and tend to point to daylight hours being a cause.

      --
      “Common sense is not so common.” — Voltaire
    34. Re:Insanity. by Gavagai80 · · Score: 1

      If we're talking about lighting intensity similar to a full moon or several moons, as in the article, then it does in fact get very dark when clouds cover the moon.

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      This space intentionally left blank
    35. Re:Insanity. by toddestan · · Score: 1

      Most urban areas get significantly brighter during the night when it's cloudy out because all the light pollution reflects off the clouds (even more so in northern climates when there's also snow on the ground). Obviously, without the streetlights you're going to have a lot less light to reflect, but you could probably get away with a lot less of them.

    36. Re:Insanity. by OffTheWallSoccer · · Score: 2

      Pardon my asking, but what type of job affords nine weeks of paid vacation? I'm envious!

    37. Re:Insanity. by eric_harris_76 · · Score: 1

      I ... AM ... KESSLER!!!

      --
      There's no time like the present. Well, the past used to be.
    38. Re:Insanity. by demonlapin · · Score: 1

      As much as I'd like to tell you, it would be unwise for me to do so. Let us simply say that I work in a job where my labor is completely interchangeable with my co-workers' (someone has to show up to do the work, but it doesn't matter who; we don't hire people that can't pull their weight), and where we have all chosen to be paid substantially less in order to have free time.

    39. Re:Insanity. by OffTheWallSoccer · · Score: 1

      For a second I thought you might be a teacher (they get summer off and they often earn lower wages), but then you threw me that "interchangeable" curveball.

  2. Must have been a slow day at Motherboard by Crashmarik · · Score: 4, Interesting

    Does take a certain something to try and recast a 20 year old failure as a great success

    1. Re:Must have been a slow day at Motherboard by shutdown+-p+now · · Score: 1

      In what sense it is a failure? They failed a single launch for a larger prototype, seemingly for no reasons connected to the prototype itself, and then funding dried up. But the prototype that they did succeed with showed that the idea is sound.

    2. Re:Must have been a slow day at Motherboard by lannocc · · Score: 1

      ...showed that the idea is sound.

      Funny, I thought the idea was light.

  3. Obligatory Joke by scunc · · Score: 4, Funny

    In Soviet Russia, night lights you!

  4. Ecological Consequences of Artificial Night Lights by SteveSgt · · Score: 2

    "Ecological Consequences of Artificial Night Lighting"
    [ http://www.urbanwildlands.org/... ]

  5. Night and day... by fustakrakich · · Score: 1

    ...you are the one
    Only you 'neath the moon or under the sun
    Whether near to me or far
    It's no matter, darling, where you are
    I think of you day and night

    --
    “He’s not deformed, he’s just drunk!”
  6. Makes sense by garyoa1 · · Score: 2

    Since global warming is pretty slow. Gotta speed it up somehow.

    --
    Wuddooeyeno? IITYWYBMAD? Like nuts? eclecticallyincorrect.com
    1. Re:Makes sense by NotInHere · · Score: 2

      In fact, if you put the mirror into Lagrange point L1, it can be used to prevent some of sun's light to reach earth, thus lowering solar input, and chilling the climate. Probably the idea sounds as insane as the one to build the hoover dam sounded to others back then*...

          (* yes some (not all roads are cool) of the giant buildings trump proposes are insane as well, and I hope it won't be seen differently in the future)

    2. Re:Makes sense by Immerman · · Score: 2

      Nope, just the opposite. Fossil fuels contribute about 1,000,000x more energy in the form of thermal retention by CO2 than they do as combustion heat. Eliminate the CO2 and you can have 1,000,000 times as much light for the same impact on global warming.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    3. Re:Makes sense by Megane · · Score: 1

      As objects at L1 are not stable, fuel would be necessary to maintain the position of the space-based sun shade.

      The L1 point itself is not stable but there are halo and Lissajous orbits around it that are relatively stable. The bad news is that a sun shade happens to be the one kind of thing where that would be least useful.

      --
      #naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
    4. Re:Makes sense by drinkypoo · · Score: 1

      Like so many other discussions about stuff in space or terraforming, this was discussed in KSR's Mars trilogy. They used an orbiting "soletta", a flexible mirror that would reflect onto itself. It was capable, when tuned, of either acting as a lens or as a prism, either focusing or scattering sunlight. You do that by making it out of conical strips which can alter their angle. If the angle of each cone is made more acute as you proceed towards the outer ring, then you get a focusing lens. But if you make each cone slightly broader, then you cause the light to miss the planet entirely. And because the light is departing the soletta at almost the same angle at which it arrives (after two reflections) it takes very little thrust for station-keeping. It should be highly achievable with solar panels and ion engines.

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
  7. then we'd know who the space vampires are by turkeydance · · Score: 2

    i've been told we need to know.

  8. Scorpion did it... by Jonah+Hex · · Score: 1

    s02e14 "Sun of a Gun" Sylvester's estranged father, a retired general, enlists the team's help after discovering that an African dictator has uncovered a deadly weapon of mass destruction from World War II and intends to use it. The team goes to an African nation to find out if the dictator has sodium panels which can concentrate sunlight before it can be launched on a rocket as a satellite death ray. Walter takes a steam in towels with the dictator who is smitten with his intellect.

    Of course the weapon was attributed to the Nazi's and the depiction of the "laser like reflection of the sun" was hilarious, but I don't watch it expecting to see hard science. According to movies and tv shows, those crazy Nazi's abandoned bunkers all over the place with all sorts of crazy inventions in them. - HEX

    1. Re:Scorpion did it... by jsilver212 · · Score: 1

      Please stop abusing apostrophes. More than one Nazi are called Nazis. An apostrophe is used when replacing bits like in a contraction (e.g. do not = don't). It is also used for a possessive, e.g. "the Nazi's super weapon was super". Try to remember: don't add an apostrophe unless you have a good reason. To make a plural, just add an S. Anyway, I just had to write this, I'm not even going to post it, it was just lethargic to say something. I don't want to be "that guy", the Grammar Nazi. I don't expect everyone to write perfectly, especially in a silly online forum, but it just really makes it hard to read. I'm sure this post is not perfect either, I'm just hopefully trying help someone write in a less annoying way. See also: http://www.angryflower.com/bob...

    2. Re:Scorpion did it... by jsilver212 · · Score: 1

      Anyway, I just had to write this, I'm not even going to post it, it was just lethargic to say something. See also: http://www.angryflower.com/bob...

      I really did not mean to post that! Well whatever, I don't mean to post this either. #ApostropheLivesMatter

  9. Re:global warming alert by penguinoid · · Score: 1

    If you believe the Russians are particularly concerned about global warming, I got some prime Siberian real estate to sell you.

    --
    Don't waste your vote! Vote for whoever you want, unless you live in a swing state it won't matter anyways
  10. Features by penguinoid · · Score: 1

    Would it have featured the ability to focus all the light onto a dissident-sized area?

    --
    Don't waste your vote! Vote for whoever you want, unless you live in a swing state it won't matter anyways
  11. Re:global warming alert by bondsbw · · Score: 1

    It may block the same amount of sunlight as it passes over the day side of the earth (unless it is in a polar orbit that is synchronized with the earth's revolution around the sun).

    Perhaps even more, since its reflective timeframe would be limited as it would pass into the earth's shadow. Also I assume the material's opacity is greater than its reflectivity.

    --
    All my liberal friends think I'm a conservative, all my conservative friends think I'm a liberal.
  12. how many wasps does it take to.... by sdinfoserv · · Score: 1

    change a light bulb? 2.... 1 to call the electrician and 1 to mix the drinks. But really, just use a light bulb.

    1. Re:how many wasps does it take to.... by Locke2005 · · Score: 1

      How many software engineers does it take? None, that's a hardware problem! How many hardware engineers does it take? We thought you were going to handle that in software!

      --
      I've abandoned my search for truth; now I'm just looking for some useful delusions.
  13. Please! by slazzy · · Score: 1

    Please! Won't someone think of the fauna?

    --
    Website Just Down For Me? Find out
    1. Re:Please! by Kartu · · Score: 1

      It would have been used only in cities. What fauna?

  14. Re:global warming alert by castionsosa · · Score: 1

    I would think they would be more worried about Kessler Syndrome than global warming. The more stuff in space, the greater a chance some of it will smack other stuff, causing pieces to fly off and smack other stuff... rendering entire orbits unusable for centuries.

  15. Re:global warming alert by alphatel · · Score: 2

    i will buy that real estate and wait for the equator to become a desert.

    It isn't already?

    --
    When the foot seeks the place of the head, the line is crossed. Know your place. Keep your place. Be a shoe.
  16. Already been done...sort of by Roger+W+Moore · · Score: 3, Informative

    It has already been done - sort of - by a town in Norway that uses mirrors to reflect sunlight down into the valley to extend the daylight hours. At a reasonably high latitude in the northern hemisphere there are not many flora or fauna to worry about in the middle of winter in an urban setting.

    The only time you'd need to worry about it is if they focus the light a lot to create a heat based-death ray. That would also be far more like the plot of a bond film...

    1. Re:Already been done...sort of by jklovanc · · Score: 5, Informative

      The Norway installation is there not to extend daylight but to direct sunlight to the town square so that people can experience direct sunlight. They used to get no direct sunlight for six months of the year. It would be unsettling to be in the shade six months of the year.

  17. Necessary anywhere by SuperKendall · · Score: 1

    It doesn't matter where you park a giant shade mirror, the effects of solar rays hitting a large surface would eventually move it anyway.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Necessary anywhere by jheath314 · · Score: 1

      How about closer to the sun than the L1 point, so that the radiation pressure is balanced by the gravitational pull of the sun?

      Of course, L1 isn't a stable Lagrange point, so you'd have to expend energy to counteract gravitational perturbations from the other planets and fluctuations in solar radiation... but given the amount of solar energy you'd be collecting you'd have plenty of power to spare for manoeuvring.

      No, the real problem would be the size of the damn thing. L1 is about four times the distance of the moon from the earth, so to block even 1% of the sun's light you'd need a shade almost half the moon's diameter.

      --
      Procrastination Man strikes again!
    2. Re:Necessary anywhere by Agripa · · Score: 1

      A statite would be a fine idea except Robert Forward is dead:

      https://en.wikipedia.org/wiki/...

  18. Re:Telling by KGIII · · Score: 1

    Are you sure it wasn't the Russians who retarded Communism?

    --
    "So long and thanks for all the fish."
  19. Soviet SDI proof of concept by deodiaus2 · · Score: 1

    The thing about it is that it was built at a time of the Cold War SDI/Star Wars concepts. While as it might have had civilian uses, I suspect that it was a precursor to the equivalent of the American "Thousand Points of Light", a SDI concept that would use a ground based laser to fire into a orbiting mirror which would be redirected towards a target. However, if all you are doing is calibrating and orienting an orbiting mirror, you could sell it to the world as a purely scientific experiment.
    The kicker in all of this is the protests mentioned which would disrupt the natural night environment. Now, we have been polluted with lots of light during the night time for the last hundred years, so I doubt that this is hardly a valid concern. I don't think that even the atomic bomb tests, which did irradiate a lot of people in the Pacific did not draw the same level of "concern".

  20. Re:so overcomplicated by R3d+M3rcury · · Score: 1

    Yeah, but we developed a pen that could write in space while the Russians just used a pencil. So I guess both sides overcomplicate things.

    (It's a joke. Yes, I know that NASA didn't spend billions of dollars developing a space pen.)

  21. Can this be weaponized? by Locke2005 · · Score: 1

    Yes, of course it can. GoldenEye is soon to become reality (although it obviously wouldn't be as impressive as it was in the movie).

    --
    I've abandoned my search for truth; now I'm just looking for some useful delusions.
  22. Re:Mirrors the other way... by Locke2005 · · Score: 1

    Sure, just paint the whole planet with reflective paint to cool it down... problem is, that also keeps all the heat generated inside the planet from escaping too! This effect is seen in the decrease in ice sheets adding to global warming, ice sheets are the most reflective naturally occurring surface we have.

    --
    I've abandoned my search for truth; now I'm just looking for some useful delusions.
  23. In Soviet Russia by Locke2005 · · Score: 1

    Mirror peer into you and take selfie!

    --
    I've abandoned my search for truth; now I'm just looking for some useful delusions.
  24. "and allowing laborers to toil longer" by Jack+Griffin · · Score: 1

    Because if there's is one thing that labourers are crying out for, it's more time to toil...

  25. Re:but wouldn't you.. by Sowelu · · Score: 1

    Depends on how much of an effect you want. The light from a full moon is about one millionth as bright as the light from the sun (thanks Wikipedia), and its albedo is a lot less than a mirror (0.136 to be precise). All of which means...yes, it would take a gigantic mirror to get full sunlight, but you can get away with a relatively small one if you could be happy with something merely as bright as a full moon or three. It also means that your mirrors aren't necessarily dangerous as weapons--you don't need a big one for them to be useful.

  26. Re:global warming alert by mysidia · · Score: 1

    Not worried.... the Vogon Constructor Fleet will be here to clear the obstructions for the intergalactic highway, long before it becomes an issue.

  27. Underestimating te effect of CO2 by Immerman · · Score: 1

    Actually, it would probably be a huge help to *reduce* global warming.

    If I recall correctly burning enough fossil fuels to produce 1 watt-hour of thermal energy produces CO2 which, over the course of it's average lifetime in the atmosphere, will retain a million watt-hours of solar thermal energy. So, you could use reflected sunlight to light up cities a thousand times brighter than they are today, while still adding a thousand times less excess heat to the Earth.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  28. Re:global warming alert by Immerman · · Score: 1

    Not really. IIRC the CO2 from burning 1 watt-hour worth of fossil fuel will, over the course of it's average lifetime in that atmosphere, retain about 1,000,000 watt-hours worth of extra heat. By switching to reflected sunlight you could light cities radically brighter than today while still radically reducing global warming.

    --
    --- Most topics have many sides worth arguing, allow me to take one opposite you.
  29. Re:so overcomplicated by blackiner · · Score: 2

    Yes, the Simpsons taught us the capitalist version of this plot: Local billionaire creates a device to blot out the Sun and sell electricity from his nuclear plant to the town 24/7.

  30. Re:global warming alert by matfud · · Score: 1

    It is in a sun synchronous (https://en.wikipedia.org/wiki/Sun-synchronous_orbit) polar orbit in theory. So you need a fair few of them. However they are to small compared to the sun to cast a shadow (the sun is not a point source. Also the foot print moves pretty damn fast.

    When illuminating the night side areas the rotate and change angle to point the reflected light at a specific location

  31. To be honest... by WillyWanker · · Score: 1

    I certainly wouldn't mind extra sunlight hours, especially in the winter. It's very depressing to wake up in the dark and come home in the dark. That being said, I absolutely wouldn't want it if it meant having to work longer hours.

  32. Multi-tasking by popstack · · Score: 1

    They also use the Space Mirrors to Space Floss.