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Dawn Spacecraft Gets a Better Look At Ceres' Bizarre 'White Spots'

StartsWithABang writes: Since its discovery as the first asteroid more than 200 years ago, Ceres has been one of the most poorly understood objects in the Solar System as even imagery from the Hubble Space Telescope is unable to resolve very much. But NASA's Dawn mission, since moving on from Vesta, has begun to map Ceres, constructing the highest resolution global map ever, with better data to come. The greatest mystery so far are two bright white spots at the bottom of a deep crater, brighter and more reflective than anything else on the planet's surface. Right now, three leading possibilities for the origin of these features exist, with Dawn possessing the capabilities to teach us which one (if any) is correct, hopefully by the end of the year!

15 of 78 comments (clear)

  1. Re:Abandoned alien solar panels? by slashmydots · · Score: 2

    Don't solar panels specifically not reflect light? It's obviously an alien hotspring spa destination.

  2. Re:Abandoned alien solar panels? by khr · · Score: 4, Funny

    Don't solar panels specifically not reflect light?

    That could be why they're abandoned...

  3. Aliens!!!! by EmperorOfCanada · · Score: 5, Interesting

    For the love of all science fiction be aliens!!! How many Sci-fi stories have we all read where an asteroid/comet/artefact is floating around our Solar system and it turns out to be some uber cool alien thing that has warp drive or a stargate or whatever and off we go adventuring around the galaxy?

    In fact I could even narrow the question down to how many sci-fi stories have we all read where the artefact involved Ceres?

    So while if I had to bet I would go with ice, soil disturbance, tectonic, or maybe even something a little cool like magnetic. But I want aliens!

    1. Re:Aliens!!!! by CaptainLard · · Score: 2

      If it is aliens would they tell us? Or like most stories would there be a coverup?

  4. Like that spot on a coconut... by See+Attached · · Score: 2

    There is always a soft spot under one of the black round circles on a coconut.. its where the straw goes! Perhaps this is where we are supposed tap into the interstellar fuel source!

    --
    Time for a new Political party in the US (or two!) One is off the rails Other cant pony up a leader.
  5. "Three Leading Possibilities" by sexconker · · Score: 5, Informative

    No need to click - the "three leading possibilities" are exactly what you guessed:
      - Ice
      - Dry Ice
      - Different rocks that have a different albedo

    If you only guessed "ice" and "different rocks" you still get full credit.

  6. Re:Ceres it's cold out there by Fortran+IV · · Score: 2

    Interesting question. The explanation for ice skates I was taught as a kid (weight of skater forces surface of ice to melt, making it slippery) appears to be discredited. Still, I'd expect any loosely-bonded water molecules between skates and the ice would boil away instantly in near vacuum. Has anybody ever tried skating at very high altitude?

    --
    I figure by 2030 or so my 6-digit UID will be something to brag about.
  7. Re:Earthlings? by itzly · · Score: 4, Insightful

    Bonobos are pretty smart, and a rough estimate might put them about 5 million years behind us on the evolutionary scale.

    They are not behind, they are right next to us on another path, and we have no way of telling where they'll go.

  8. Re:Remnants of a forgotten planet by Jack9 · · Score: 2

    > Having a diamond the size of Texas would certainly create a new space race

    Diamonds are not a compelling reason to go to other planets. The difference in economic scale is staggering. Diamonds are an artificially constrained resource. De beers and friends have conspired to keep cheap artificial diamonds (not fake zirconium) out of the luxury market, somewhat successfully. This doesn't mean it's work spending billions of dollars to get more. We can manufacture them here, cheaper than going out into orbit, much less another planet.

    --

    Often wrong but never in doubt.
    I am Jack9.
    Everyone knows me.
  9. Re:Remnants of a forgotten planet by 0123456 · · Score: 3, Funny

    This doesn't mean it's work spending billions of dollars to get more. We can manufacture them here, cheaper than going out into orbit, much less another planet.

    But these are SPACE DIAMONDS, and clearly far more likely to get you laid than those silly artificial diamonds.

  10. Re:Ceres is a planet now? by The+Grim+Reefer · · Score: 5, Funny
  11. Re:Remnants of a forgotten planet by Nidi62 · · Score: 2

    > Having a diamond the size of Texas would certainly create a new space race

    Diamonds are not a compelling reason to go to other planets. The difference in economic scale is staggering. Diamonds are an artificially constrained resource. De beers and friends have conspired to keep cheap artificial diamonds (not fake zirconium) out of the luxury market, somewhat successfully. This doesn't mean it's work spending billions of dollars to get more. We can manufacture them here, cheaper than going out into orbit, much less another planet.

    Just buy white sapphire. Looks just like a diamond unless you compare them side by side (and then only by color of the light or by hardness) and about a third of the price.

    --
    The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
  12. Re:Earthlings? by swb · · Score: 5, Insightful

    Bonobos just figured out that civilization is a lot of extra work to go through for fucking and eating. Especially when you can just fuck and eat without it.

  13. Re:Earthlings? by CaptainLard · · Score: 2

    Overall I don't think there's be any reason for them to suspect that we were once here.

    True but possibly because they may never make the leap now that all the easy fuel is used up. Wasn't there a story on here a few days ago about how difficult it would be to restart industry after a civilization collapse because there would be no infrastructure that can drill 10000ft underwater, etc? It took a lot more than 5M years under very different surface conditions for all that oil and coal to collect. The fact that we've burned as much fossil fuel as we did makes me think that there hasn't been a prior intelligent species (or at all?).

  14. Re:Spectrograph? by cusco · · Score: 4, Informative

    Yes, they do, and no, they're not.

    --
    "Think about how stupid the average person is. Now, realise that half of them are dumber than that." - George Carlin