NASA's Curiosity rover has been doing a great job ever since it landed on the surface of the red planet. The rover has now discovered evidence of volcanic activity on the surface of planet Mars.
The modified Boeing jet SOFIA was instrumental in helping make the discovery which has eluded researchers for four decades.
The sightings of a rock formation that resembles a human form has sparked talks about alien life on Mars which NASA allegedly does not wish to divulge, claim UFO hunters.
Observations made from images captured by NASA's Mars rover are suggestive of microbial existence in the past.
