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Disinformation about Martian sky color apparently started with an order by NASA Administrator Dr. James Fletcher when Viking 1 touched down. Updated 2/25/2016.

Color photos back from the Mars Science Laboratory include a pale blue sky. 
For 36 years, from 1976 when Viking 1 landed on Mars until 2012 when MSL touched down, NASA/JPL tried to make us think that the color of the Martian sky was reddish, pink, or butterscrotch when it is really blue as MSL reveals. At this rate they may be able to drag out revelaing the truth about Mars for centuries. This page shows how the color of the Martan sky has changed over the years, and it relates the true to color to atmospheric pressure. Why did NASA Adminstrator Dr. James Fletcher order a Viking imaging team technician to adjust the color controls on every monitor in the JPL laboratory, increasing the red channel so that the sky lost its blue tint and the color of the rocks shifted from an earthly reddish-brown to an unearthly, deep rusty-red hue? Was it blot out what Dr. Ron Levin saw - green patches that looked like plants growing on rocks?  Some of the original controversy about his actions and about greenary seen on Mars are found in an article by Goro Adachi entitled HIDDEN COLORS OF MARS. In an article by Richard C. Hoagland we read:

"What Gil Levin, Ron and Patricia Straat did not know (even to this writing) is that the order to change the colors came directly from the NASA Administrator himself, Dr. James Fletcher. Months later, Gil Levin sought out the JPL Viking Imaging Team technician who actually made the changes and asked why it was done. The technician responded that he had instructions from the Viking Imaging Team that the Mars sky and landscape should be red and went around to all the monitors ‘tweaking’ them to make it so. Gil Levin said, ‘The new settings showed the American flag (painted on the Landers – below as having purple stripes. The technician said that the Mars atmosphere made the flag appear that way [emphasis added].’"

FIGURES 1 AND 2 ABOVE: (1) THE CONTROVERSY STARTS WITH HOW OLD GLORY IS DEPICTED. Figure 2 - Dr, Fletcher seen with President Nixon. Fletcher began 36 years of disinformation by ordering the sky color seen at Viking 1 altered from blue to reddish. Figure 3 Below: Look what happens to our sky color at 83,600 feet (with pressure ~11.3 mbar)..

Account of the Start of the Martian Sky Color Controversy (as portrayed on pages 39-40 of DEAD MAR, DYING EARTH by Dr. John Brandenburg):


    The following day (sol 2 for Viking 1) was equally auspicious for JPL when the first color images were received.  As a crowd surrounded the monitors, the colors of the Martian landscape displayed themselves like an Arizona picture postcard: bright sunlight, blue sky flecked with hints of high clouds, reddish-brown soil and gray rocks.  The technicians, scientists and media representatives were spellbound. It looked just like home – at least it looked very familiar to anyone who had seen the desert regions in the southwest of the United States. Who would have imagined that our first look at another world would appear so earthly?  An American flag was proudly emblazoned on a domed compartment of the spacecraft which figured prominently in the scene. Never had its red, white, and blue colors glowed so brightly as they did beneath the Martian sky that day. For the first time humans beheld the sky of a planet different from their own – and it was a reassuring deep blue.

    Amid the celebration, a very perplexed, newly graduated high school student named Ron Levin sat at a console at JPL. For over two hours Ron watched with the others as color images came in. Ron, the son of Dr. Gilbert Levin, a scientist connected with one of the tests aboard the lander, was fascinated. Like the rest of us, Ron saw the “blue sky” of Mars in the first color image. Unlike us, Ron also saw images of rocks with greenish patches on them (see Figure 2 below).  While he watched, a Viking imaging team technician adjusted the color controls on every monitor in the laboratory, increasing the red channel so that the sky lost its blue tint and the color of the rocks shifted from an earthly reddish-brown to an unearthly, deep rusty-red hue.  When Ron attempted to adjust the monitors back to the original settings, he was told he’d be ejected from JPL if he persisted. To this day, Ron, now Dr. Ron Levin, physicist, makes it clear that, in his considerable estimation, there was no scientific justification for the adjustment in color. He speculates that the color was changed primarily because the planetary scientists took a dim view of the greenish patches on the rocks, which might have suggested to the public that some primitive form of plant life might be growing right on the surface of Mars. The sky of Mars has been red ever since. (Update of February 26, 2015 - Finally, after 36 years of disinformation with Viking 1, Viking 2, Mars Pathfinder, MER Spirit Rover, MER Opportunity Rover, and Phoenix; with Mars Science Laboratory we are allowed to see that the Martian sky is blue).


Note: The picture of the green patches is taken from an important article by Gil Levin at

FIGURE 4 Below: The rocks with green are seen in this picture. The green color was wiped out by Fletcher's order to alter sky color. The motive for changing sky color may have been to hide indications of life in Mars.

       As can on Figure 1 above from Slide 10 of our PowerPoint, when we view our atmosphere from an altitude of 83,600 feet where pressure should be down to about 11.3 mbar (still a good bit higher than the 6.1 mbar at Mars areoid), the sky above is night-like and dark blue. It's also close to the color of the Martian sky at sunset. The color of the Martian sky would be expected to take on a redder color during a dust storm. But there is no reason to assume that it would always be reddish (or butterscotch) even when dust levels are exceptionally low. If accepted Martian pressures are too low, as we think we prove in our Mars research and Report, then the sky color before MSL landed is just one more NASA error. Until MSL showed us the real color of the Martian sky, NASA often published photos that show a Mars that looked much  like Earth, but it always stated that the colors were exaggerated. One recent example is offered below on Figure 5 and 6..

       There is a video HERE about where NASA/JPL appears to have gone wrong in its color calibration of the Martian sky color. Another excellent video showing how pressure should affect sky color is HERE.

Figures 5 and 6 - Playing games with Mars sky color.

NASA/JPL normally only lets us see a Martian sky that is reddish or butterscotch in color, but as is seen below, the have let us see blue sunsets on Mars, and even a partial eclipse of the sun by the Martian moon Phobos

Figure 7 - Phobos transits the sun as seen from Mars near sunset.

FIGURE 8 - Cape St. Vincent at Victoria Crater on Mars.

Figure 9: This MSL photo taken on September 9, 2015 means we can finally be sure that the Martian sky is blue

For a follow up of this article and a discussion about possible plant life and higher than advertised oxygen levels on Mars, click here.