Results 1 to 9 of 9

Thread: A very interesting image

  1. #1
    Join Date
    Jan 2002
    Posts
    556
    I found this image, which I thought was pretty interesting.

    It's a photomontage showing the relative sizes of the terrestrial planets and the six largest satellites.



    I think it's neat!
    _________________
    "The contemplation of celestial things will make man both speak and think more sublimely and magnificently when he descends to human affairs." -Marcus Cicero

    <font size=-1>[ This Message was edited by: AstroMike on 2002-02-13 00:17 ]</font>

  2. #2
    I can't help but notice that Titan appears larger than Ganymede. Why is that? Isn't Ganymede supposed to be larger than Titan?

    Nice picture, by the way.[img]/phpBB/images/smiles/icon_smile.gif[/img]

    Mongo

  3. #3
    Join Date
    Jan 2002
    Posts
    556
    Mongo, Titan is seen with its cloud cover which is about 300 km thicker than the solid body. The solid body of Titan is 5,150 km in diameter; Ganymede is 5,268 km in diameter.

    By the way, I apologize that it's a black and white picture. A color image would be cooler, but I haven't found one yet.

    _________________
    "The contemplation of celestial things will make man both speak and think more sublimely and magnificently when he descends to human affairs." -Marcus Cicero

    <font size=-1>[ This Message was edited by: AstroMike on 2002-02-06 23:15 ]</font>

  4. #4
    Join Date
    Oct 2001
    Posts
    3,015
    Yahbut they resized the images according to size. I checked the pixel sizes of the images, and Titan's image doesn't seem to be bigger than Ganymede's.

  5. #5
    Join Date
    Oct 2001
    Posts
    165
    On 2002-02-06 22:50, AstroMike wrote:
    I found this image, which I thought was pretty interesting.

    It's a photomontage showing the relative sizes of the terrestrial planets and the six largest satellites.

    Beautiful. [img]/phpBB/images/smiles/icon_eek.gif[/img] [img]/phpBB/images/smiles/icon_cool.gif[/img] [img]/phpBB/images/smiles/icon_smile.gif[/img]

    Yahbut they resized the images according to size. I checked the pixel sizes of the images, and Titan's image doesn't seem to be bigger than Ganymede's.
    I think it's the shadow on Titan's right side that's throwing everyone. [img]/phpBB/images/smiles/icon_confused.gif[/img]

    _________________
    "It is possible to store the mind with a million facts and still be entirely uneducated." -- Alec Bourne

    <font size=-1>[ This Message was edited by: James on 2002-02-07 07:16 ]</font>

  6. #6
    Join Date
    Oct 2001
    Posts
    3,015
    On 2002-02-07 07:14, James wrote:
    I think it's the shadow on Titan's right side that's throwing everyone.
    Yeah, I guess so. You can use your imagination to make it bigger.

  7. #7
    Join Date
    Oct 2001
    Location
    The Space Coast
    Posts
    2,271
    Regarding Ganymede and Titan:

    I did a "quick and dirty" comparison using Paint Shop Pro and it appears that they are about the same pixel size - which would make sense. Their diameters are so close that at the scale of the images you are talking a mere couple of pixels at most.

    Titan is 98% the size of Ganymede - The measurement I get of Ganymede is 96 pixels wide. That would make the image of Titan, if it were a full disk, 94 pixels wide. Throw in the shadow and the indistinct edges and they appear the same size.
    _________________
    "Be very, very careful what you put into that head, because you will never,
    ever get it out."
    --Thomas Cardinal Wolsey (1471-1530)

    <font size=-1>[ This Message was edited by: Christopher Ferro on 2002-02-07 07:56 ]</font>

  8. #8
    Join Date
    Oct 2001
    Posts
    321
    This is a cool picture. Even if it looks like Mars split in half. [img]/phpBB/images/smiles/icon_smile.gif[/img]

    It made me look up some numbers, since off the top of my head I would have guessed that Triton was larger than Io or Europa (it isn't).




  9. #9
    Thanks for the pic, AstroMike.

    It's always amazing to see how large Jupiter's moons actually are. And then its also amazing to see how relatively large our Moon (note: the capital M) is.

    Thanks again.

Similar Threads

  1. Replies: 7
    Last Post: 2009-Aug-06, 07:45 AM
  2. Replies: 4
    Last Post: 2007-May-30, 09:20 PM
  3. That was interesting
    By mike alexander in forum Off-Topic Babbling
    Replies: 15
    Last Post: 2007-Apr-19, 07:07 AM
  4. Interesting spiral formation in Spirit image
    By ToSeek in forum Space Exploration
    Replies: 7
    Last Post: 2004-May-02, 11:55 AM
  5. VERY INTERESTING.....a bit long but very interesting.
    By BillsGirl99 in forum Against the Mainstream
    Replies: 15
    Last Post: 2003-May-30, 04:47 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •