NASA photo on strange light on Mars has UFO buffs talking

Cropped: This image was taken by Navcam: Right B (NAV_RIGHT_B) onboard NASA's Mars rover Curiosity on Sol 588 (2014-04-02 09:04:28 UTC).   

by David Perlman :

(04-08) 18:15 PDT SAN FRANCISCO -- Microbes, faces and rusted cars have all appeared as images on the surface of Mars, and now an official NASA photograph shows a bright light shining from the Martian surface.
It has - as they say - gone viral.
UFO buffs claim the light could be proof that some form of "intelligent life" is living underground and uses light "just as we do."
But scientists at the Jet Propulsion Laboratory in Pasadena, who have discovered evidence that ancient streams of water once flowed across the slopes of a vast Martian crater, are suggesting more prosaic explanations for the light...Continue reading...