Check Out This Short Time-Lapse From Cassini

Discussion in 'Techforge' started by Tuckerfan, Jan 6, 2019.

  1. Tuckerfan

    Tuckerfan BMF Staff Member Moderator

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    For scale, the Great Red Spot is over twice the size of the Earth.

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  2. Marso

    Marso High speed, low drag.

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    See, it just never looks like that through my backyard telescope. That's why I sold the mother scratcher in a garage sale. :tos::madcookie:
  3. Tuckerfan

    Tuckerfan BMF Staff Member Moderator

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  4. Marso

    Marso High speed, low drag.

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    Just noticed something not right in that video: the inside moon appears to be orbiting at a slower speed than the outside moon. Should be the other way around.
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  5. Lanzman

    Lanzman Vast, Cool and Unsympathetic Formerly Important

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    And I think they mean Juno, not Cassini.
  6. Tuckerfan

    Tuckerfan BMF Staff Member Moderator

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  7. Paladin

    Paladin Overjoyed

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    I think it's a trick of the perspective. The moons are at similar points in their orbits, and the probe is passing by them. Their "movement" is really just the changing perspective of the probe.
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  8. Marso

    Marso High speed, low drag.

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    Hmm. I thought of that, but it would mean Cassini was moving retrograde to the planet's spin and the orbits of the moons. Possible, but it doesn't seem like the best way to do a grav-assist. Either that, or the camera is inverted in the picture, and 'up' is looking towards Jupiter's 'south pole.'
  9. ed629

    ed629 Morally Inept Banned

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    I noticed that as well.