Since Curiosity landed on Mars in 2012, there have been several rumors that evidence has been found of Martian life in the forms of fossils, statues and even a carved alien skull and that NASA has "covered up" the existence of alien life on the planet.
But NASA imaging scientist Justin Maki, who works at NASA’s Jet Propulsion Laboratory ss head of the team looking after Curiosity’s engineering cameras, has denied the alien life rumors pointing out that the light appears only in the photo taken with the camera on the probe’s right-hand side suggesting that it's sunlight reflecting off a particular rock, or light that has found its way through the camera’s housing due to damage of some sort.
Mars rover mission's suggests that the light is due to cosmic rays bouncing off the camera’s detector or is simply a very “glinty” rock that has been caught by the rover. This theory is supported by the fact that both photos are taken at a low angle looking up the ridge with the sun behind the rover.
The flash of light is off Curiosity's prescribed route, about 175 yards away, over the ridge, so the rover will not be investigating its source. A fact certain to inspire further rumors of NASA cover up among the "Alien Life" proponents.
The Daily Galaxy via NASA and The Guardian