NASA’s Mars Curiosity rover spotted a strange glowing object that seemed to hover just above the surface of the Red Planet earlier this month.

While the glint on Mars has captured the imagination of folks on social media, it was likely just sunlight, a cosmic ray or a camera artifact. But in an unrelated development days later, the rover detected something else ― and it could be a long-sought signal of possible microbial life on or inside the planet.

The glowing object was captured on camera ― look at the right side of this raw image taken…