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  #21  
Old 24-05-2015, 04:30 PM
deanm (Dean)
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The fact that the largest high-reflectivity feature is right in the centre of a whopping great crater suggests to me that what we see are the remnants of an incoming icy body (comet?), breaking up because of gravitational tidal forces, then impacting (hence the adjacent reflective blobs).

Either that or a significant impact has exposed or excavated pre-existing icy sub-surface material.

But then, I'm only a biologist...!

Dean
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  #22  
Old 24-05-2015, 06:06 PM
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Regulus (Trevor)
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What I found interesting was that in one of the movies it remained the same size and the albido didn't change as the planet rotated. You would expect it to fade as it rotated away from direct on to the camera and sun.

Trev
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  #23  
Old 24-05-2015, 08:09 PM
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If the stuff is crystalline (particularly cubic crystalline) then it will reflect light back in the general direction of the incident light rather well. This is the same principle that the reflective paint used on the roads employs to "light up" at night when headlights shine on it.

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Tony Barry
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  #24  
Old 25-05-2015, 12:49 PM
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Quote:
Originally Posted by mikesbytes View Post
New photos of the spots and they have multiplied, particularly around the smaller spot, which is now 2 spots.
Clearly these are space snow monsters that are multiplying and preparing for attack.
Given that they will have noticed Dawn and that their form up point for the invasion has been discovered, it will be interesting to see if they press on with the invasion, or call it off.
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  #25  
Old 27-05-2015, 10:31 AM
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ZeroID (Brent)
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Quote:
Originally Posted by Regulus View Post
What I found interesting was that in one of the movies it remained the same size and the albido didn't change as the planet rotated. You would expect it to fade as it rotated away from direct on to the camera and sun.

Trev
Yes, I wondered that myself ...
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  #26  
Old 27-05-2015, 10:59 AM
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sn1987a (Barry)
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Money shot?
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  #27  
Old 27-05-2015, 02:35 PM
clive milne
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Money shot?
I'll pay that.
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  #28  
Old 30-05-2015, 09:46 PM
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The latest theories suggest that it is a large hole in the surface and there is a big bright light bulb inside Ceres.
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  #29  
Old 01-06-2015, 12:34 AM
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If it's a multi storey car (UFO) park, then the security lighting is good.
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  #30  
Old 01-06-2015, 01:01 AM
glend (Glen)
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An incomplete section of the outer skin of the Death Star.
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  #31  
Old 01-06-2015, 04:25 PM
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Eratosthenes (Peter)
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Enceladus, which is a moon orbiting Saturn is the most reflective large object in our solar system (apparently the surface of Enceladus reflects about 90% of the sunlight that reaches it).

I wonder what the surface of Enceladus is composed of and why it has such a high reflectivity?

http://www.seasky.org/solar-system/a...dus01_sk12.jpg
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  #32  
Old 01-06-2015, 05:37 PM
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Slawomir (Suavi)
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Ice?

Here...http://solarsystem.nasa.gov/planets/...ject=Enceladus

and here...http://t.space.com/all/25328-ocean-o...th-ice-video#1
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  #33  
Old 01-06-2015, 07:04 PM
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...we can also thank material discharge from the surface of Enceladus, to keep one of the rings going strong around Saturn. Enceladus is my 4th favourite object in our solar system ladies and gentlemen
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  #34  
Old 08-07-2015, 01:17 PM
scoperboy (Stuart)
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