Martian Mystery
When artificial structures appeared on Mars
They were first spotted by amateur astronomers. Structures, which looked like buildings, started showing up on the surface of Mars. NASA assembled a team to investigate. I was put in charge.
After three days, I called my boss and said, “We know what’s going on.”
“What?”
“Fifty years ago, we sent a robot to Mars to see if it can build structures using a 3D printer and Mars’ natural resources. It was successful, but we had to end it when priorities changed.”
“Oh, god!”
“We thought we deactivated the robot, but apparently not. It’s been working quietly for fifty years.”
Inspired by the article about 3D printing on Mars: