MESSENGER takes a family portrait of the solar system |
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MESSENGER takes a family portrait of the solar system |
 Feb 18 2011, 07:33 PM
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#16
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 Bloggette par Excellence  Group: Admin Posts: 3968 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454  |
Is this better?
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Feb 18 2011, 07:40 PM
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#17
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 Senior Member Group: Moderator Posts: 6481 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Stick a fork in it; it's done!
 Perfect, Emily!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 18 2011, 09:51 PM
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#18
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Member Group: Members Posts: 114 Joined: 27-September 10 Member No.: 5458 |
That's a great comparison Emily; really puts both in perspective very nicely.
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Feb 18 2011, 10:33 PM
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#19
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 Senior Member Group: Members Posts: 3534 Joined: 1-October 05 From: Croatia Member No.: 523 |
Pretty cool mosaic and they get extra points from me for catching the Milky Way.
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Feb 18 2011, 10:46 PM
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#20
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 Senior Member Group: Members Posts: 2932 Joined: 4-November 05 From: North Wales Member No.: 542 |
What a great idea! But the orbit of Neptune looks a bit out of kilter in the lower diagram. Shouldn't it be fairly circular and concentric with the others?
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Feb 18 2011, 10:49 PM
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#21
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Senior Member Group: Members Posts: 3534 Joined: 1-October 05 From: Croatia Member No.: 523 |
Nothing wrong with that. Voyager 1 didn't look at the solar system from an infinite distance so this perspective effect is normal. Unlike the MESSENGER graphic which shows the solar system from "above". It's the upper diagram that's technically meaningless.
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Feb 18 2011, 10:50 PM
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#22
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Bloggette par Excellence Group: Admin Posts: 3968 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
It's because of the perspective; it widens toward the viewer. Here's the view from the Solar System Simulator.
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Feb 18 2011, 11:05 PM
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#23
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Senior Member Group: Members Posts: 2932 Joined: 4-November 05 From: North Wales Member No.: 542 |
OK, thanks.
 The (small) inclinations and eccentricities of the orbits must be conspiring with the perspective too. Simplistically I'd expect Saturn-Uranus-Neptune to be approximately evenly spaced on any radius but that's clearly not the case from this viewpoint, even allowing for the perspective. |
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Feb 18 2011, 11:17 PM
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#24
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Senior Member Group: Moderator Posts: 6481 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
The educational value of the poster is becoming rapidly evident from the discussion!
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 18 2011, 11:42 PM
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#25
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Senior Member Group: Members Posts: 2932 Joined: 4-November 05 From: North Wales Member No.: 542 |
Yes. Clearly I must spend more time on the simulator before I'm allowed on the away team.
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Feb 19 2011, 12:57 AM
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#26
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Senior Member Group: Moderator Posts: 6481 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I'm with ya, Nigel!
 Heck, the only way I know where I am at any given time is through sensing an acceleration of 9.8 m/sec on the soles of my cheap dolomite feet...EDIT: Not to be a smartass, and I apologize if it came off that way at all. This poster stimulates discussion, and thus is inherently educational.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Feb 19 2011, 03:37 AM
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#27
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 Senior Member Group: Members Posts: 1259 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
That is very awesome Emily! I was just wishing someone would make that....
-------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
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Feb 19 2011, 03:50 AM
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#28
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Senior Member Group: Moderator Posts: 6481 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
I actually never dreamed I'd see something similar in my lifetime.
We are quite lucky, you know... ...there will be many, many others after us to see such things, and in more detail, but we are the first.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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