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NASA's Spirit Rover Crew Are 'Slaves To Mars'

Quirk writes "The Telegraph has a bit on the challenge faced by the 280 team members who have had to leave Earth time behind and attune their circadian clock to the Mars solar day or 'sol'. '...the team's wake-up times and meal times two weeks after the landing will have shifted by nine hours.'"

13 of 46 comments (clear)

  1. Mars Time by Henry+V+.009 · · Score: 3, Funny

    That explains things. I think I've been attuned to Mars time for a while now.

    After all, it's not like my caffeine addiction could be affecting me.

  2. Damn Lag! by Prien715 · · Score: 2, Informative

    One thing a lot of people don't realize is that the communication lag between mars and earth is over 30 minutes. Imagine trying to play quake with that kind of lag.

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    -- Political fascism requires a Fuhrer.
    1. Re:Damn Lag! by p2sam · · Score: 2, Interesting

      This always confuses me. The Earth is about 8 light seconds away from the Sun (don't they call it 1 AU or something?) I'd guess that distance between Earth and Mars is less than 10 AU. Therefore shouldn't the round trip time between Mars and Earth be less than 10 * 8 seconds * 2 == 160 seconds 3 minutes?

    2. Re:Damn Lag! by ThatTallGuy · · Score: 2, Informative
      That's 8 minutes, not eight seconds. Refer here.

      AU: Astronomical Unit, defined as the radius of the Earth's orbit, appprox 93M miles. Used for convenience and because when you get such large values that change all the time, people get sloppy. :)

      Mars' orbit is ~1.6 AU from the sun. (See Bode's Law.) This means that Mars can be as little as 0.6 AU's or as much as 2.6 AU's depending on where the planets are in their orbits relative to one another. Communication times therefore would range from about 4-5 mins to 20+, one-way.

      The spacecraft are relatively slow to travel, since they coast the whole way. The path they take is a long leisurely curve so that less rocket fuel is required. There's a good animation of the path at Nasa (MPG, MOV.) So the timing of the launches is chosen for when the locations of Mars and Earth give the easiest launch (least energy required) and communications is secondary.

      Hope this helps.

  3. Re:Challenge, huh? by curious.corn · · Score: 2, Insightful

    Well yeah, strictly speaking it's off topic but I think it's also insightful. I believe scientific pursuit has to address whatever it feels interesting and is, in perspective, useful for the advancement of technic and pure knowledge. On the other hand, obtuse media coverage that is to scientific information like a circus show compared to a naturalistic report betrays profound callousness. I don't think anyone would be as excited driving through a desert road yet overnight everyone has become an eso-geologist... I'd prefer mass media to cover without pietism how the global community is/should fight to grab Africa out of the middle ages (and leave the Mars Explorations to good scientific journals, Nature, SciAm or Nat Geo for the beautiful imagery)... Now mod me down to -1

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    Mi domando chi à il mandante di tutte le cazzate che faccio - Altan
  4. ITYM 8 light-MINUTES. by Anonymous Coward · · Score: 3, Informative

    1 AU / c = 8.31675359 minutes.

  5. Re:Challenge, huh? by curious.corn · · Score: 4, Insightful

    Yours is a common argument amongst us westerners... it also has some logic within but our own success as a society debunks it. You see, here in Italy higher education and research are kept in very low consideration; many young people prefer to drop out of school to work in the "Made in Italy" industry. Apparently they seem to have a good deal with the wages earned they can afford uber cell phones, ridiculously aftermarketed cars, D. Beckham sportswear and sat TV football and disco club... They are being screwed and after a decade or so this logic is showing it's shortsightedness as the patrimony erodes. Today, our economy is more or less at a developing country's mercy, competing with underpaid (compared to our standards) labour, basically producing low tech gadgetry with little intrinsic value. We don't cultivate a competitive advantage, the whole world is catching up and will sooner or later leave us in the cold. What point am I trying to make? Well, while we are more or less conciously forfeigting our chances to keep the pace these kids sweating their lives in ratholes aren't getting their fair chance. There's no chance a country will improve if it coerces it's human resources into poor margin jobs; we are the living proof. So while those illiterate kids are pretty happy not to starve (but then wouldn't they be much happier if they had a school to attend or a childhood to play) they also suffer because their condition will likely never change in their lifetime and won't have enough income to bootstrap their descendancy's emancipation. For all practical purpouses they are medieval serfs... that's not nice and is cruel on our part to benefit from it.

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    Mi domando chi à il mandante di tutte le cazzate che faccio - Altan
  6. "Mars"? by hey! · · Score: 2, Funny

    That "Barsoom" you peasant!

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    Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
  7. I wanna Mars Watch! by RobertB-DC · · Score: 4, Funny

    Julie Townsend copes by wearing two watches: one on her left wrist set to Earth time, a second, specially modified, on her right running on Mars time.

    "There are some things I only know in Mars time," said Townsend, a mission avionics engineer.


    Time to write another note to the folks at ThinkGeek: please add the Mars Watch to your Gadgets :: Watches lineup! I want a Mars Watch!

    And please, be sure to have it modelled by Ms. Townsend. For me, she's a great role model for my daughters. For the rest of Slashdot: she's a girl geek! Cool!

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  8. Definitions, people... by Transcendent · · Score: 3, Interesting

    have had to leave Earth time behind and attune their circadian clock to the Mars solar day or 'sol'

    Now why in gods name did they name the martian day AND the Sun the same damn thing?

  9. Restricting thought by AllenChristopher · · Score: 2, Insightful
    You're absolutely right.... I'll be sure to ban the phrase "Slaving away on something" from my phrasebook.... also I'll scratch out the SL for "Slave" on my hard drive and replace it with NSMM for "Not so much the Master." I suppose I can keep the expression "slave to fashion"... Even the sweatshop kids are not so much slaves to their masters as a fashion model is to anorexia.

    Further, I can't be "hungry," "tired," "sad," or "lonely"... think of the famine victims, the sufferes of sleep-deprivation torture, the survivors of the Iran earthquake, and the bubble-boys of the world. I can't be "tall," or "strong, or "smart," because of Shaq, Mister Universe and Stephen Hawking (also sometimes known as Mister Universe).

    *********

    It seems to me that the last thing we should be doing is erasing the other meanings of a word like slave... look how your post has illustrated the difference between metaphorical slavery and real slavery, thus bringing attention to slavery that might otherwise have been missed. In a sense, The Telegraph and you have conspired in community service. Bully for you. Without metaphorical slaves, it could never have happened.

  10. Shift workers are used to this by skware · · Score: 3, Informative

    I worked as a shiftworker for the last 11 months. These were 12 hour shifts, 7am-7pm or 7pm-7am, 2 days followed by two nights followed by 4 days off. To work my sleep best I'd sleep 7 times every 8 days or effectively increase my days by about 3.5 hours per day. I got out of that job recently but have found that my circadian rhythm hasn't returned to normal yet (It's 3am here atm)

  11. Re:Ehm... How voluntary is this? And how legal? by herc_mk2 · · Score: 2, Insightful

    Last I checked, there was no Local 427 of the Allied Brotherhood of Rocket Scientists and Affiliated Pointy-Heads at CalTech.

    I suppose the folks doing this are doing it because they want to, of course... it's very likely that they view this as a once-in-a-lifetime experience. 90 days of messed up sleep is nothing if you're doing what you love.