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Comment Re:Ice "may" be there (Score 2) 55

The Lunar Reconnaissance Orbiter Camera (LROC) is effectively color. The Wide Angle Camera (WAC) on LROC has seven visible-band and two UV filters.

Color is all done with filters. The CCD just detects light. You select for color by placing a filter in front of it to only let a chosen wavelength band through, depending on what you want to look for. You can make a color composite (what is commonly called a "color picture") by taking the same image in three different wavelength bands.

While it is amazing, LROC isn't really the right instrument for this observation. If the ice is covered by dust, it will be hard to see in visible light. The LAMP (Lyman-alpha), LEND (neutron), and Mini-RF (the RADAR used in this study) are better for detecting buried water ice.

Comment Re:"Their" work. (Score 1) 345

The government may classify information as Confidential if it would damage national security if disclosed to the public. That doesn't appear to be the case here, but it's true that not all government information is nor should be publicly available. That's not to say the classification system doesn't get misused, but that's another issue.

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