I think the reason you have to ask is, it is not known...

Space/Science » in reply to âˆ’297 Â°F to 801 Â°F

alcaray — 10/13/2008 2:19:23 AM (archived)

...yet.

Hard to say what instruments have caught exactly what on these flybys. The real mission starts when they go into orbit. And yes, they have plenty of guns to apply to surface composition (not counting 2 imagers and the laser altimeter):
Gamma-Ray and Neutron Spectrometer
X-Ray Spectrometer
Mercury Atmospheric and Surface Composition Spectrometer

The whole thread (18 posts)

Mercury - Raoul - 10/7/2008 5:38:43 AM
- MER-CU-RY !!!!! - Raoul - 10/7/2008 5:07:59 PM
  - re: MER-CU-RY !!!!! - Raoul - 10/7/2008 6:25:45 PM
    - You want rays? We got RAYS! - nick hoffman - 10/7/2008 8:55:17 PM
      - re: You want rays? We got RAYS! - E.P. - 10/8/2008 10:03:52 PM
        
        re: You want rays? We got RAYS! - nick hoffman - 10/9/2008 12:12:36 PM
        
        re: You want rays? We got RAYS! - gbaikie - 10/9/2008 11:08:52 PM
        
        âˆ’297 Â°F to 801 Â°F - E.P. - 10/12/2008 5:22:48 AM
        
        I think the reason you have to ask is, it is not known... - alcaray - 10/13/2008 2:19:23 AM
        
        [Please moderate your language] - Moderator Nick - 10/12/2008 9:22:59 AM
        
        re: âˆ’297 Â°F to 801 Â°F - gbaikie - 10/12/2008 9:10:04 AM
    - GO RAO-UL - Robert - 10/7/2008 8:31:51 PM
      - re: Mercury similar to.... - Raoul - 10/7/2008 9:12:57 PM
        
        re: Mercury similar to.... - gbaikie - 10/8/2008 1:05:53 AM
        
        A question on Caloris Basin - Socrates II - 10/8/2008 2:37:36 AM
        
        Sun at the horizon or Sun vertical: relief visble or no relief (n/t) - Raoul - 10/8/2008 5:40:02 AM
        
        re: A question on Caloris Basin - gbaikie - 10/8/2008 3:52:22 AM
        
        Thanks - Socrates II - 10/8/2008 1:38:21 PM

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