Transient lunar phenomena (TLPs) are described as short-lived changes in the  brightness of patches on the face of the Moon.  They last anywhere from a few seconds to a few hours and can grow from less than a few to a hundred kilometers in size.  Most instances of TLPs are described as increases  in the overall luminosity of a spot on the Moon; however, sometimes observers report a decrease in a region’s brightness or even a change in its color to  red or violet.  Reports of TLPs have described them as “mists”, “clouds”,  “volcanoes”, among other provocative terms.  Even today, they are poorly  understood.


On October 29, 1963, two Aeronautical Chart and Information Center cartographers, James A. Greenacre and Edward Barr,[9] at the Lowell Observatory, Flagstaff, Arizona, manually recorded very bright red, orange, and pink colour phenomena on the southwest side of Cobra Head; a hill southeast of the lunar valley Vallis Schröteri; and the southwest interior rim of the Aristarchus crater.[10] This event sparked a major change in attitude towards TLP reports. According to Willy Ley: “The first reaction in professional circles was, naturally, surprise, and hard on the heels of the surprise there followed an apologetic attitude, the apologies being directed at a long-dead great astronomer, Sir William Herschel





“the only color we see is what we bring or the Earth, which is looking down  upon us all the time. And to find orange soil on the moon was a surprise”

Capt. Eugene Cernan, last man to walk on the moon.



Can you identify this object?