Alone on Mars | The Signal

After returning from the collapsed cave, our stranded astronaut settles into his evening routine - documenting another failed day. But when he realizes the video camera was left in the vehicle, he suits up for a quick trip outside into the Martian night.
At the vehicle, reaching for the camera, something touches him from behind. A hand - humanoid but not human. Five elongated fingers on his shoulder. He freezes as electricity courses through his body.
Then the vision comes.
A future Earth divided by massive walls. The poor crammed into unstable towers reaching toward polluted skies. The wealthy living in pristine luxury behind guarded barriers. Two completely different worlds in the same city.
Alien ships descending through the atmosphere. The same vessels that built the pyramids thousands of years ago. People running in panic - rich and poor together, class meaningless in shared terror.
And then... years later... the same city in ruins. Slum towers collapsed. Elite towers destroyed. No distinction between rich and poor in the rubble. An empty playground where children will never play again.
Who caused this destruction? The aliens? Or humanity itself?
He wakes on Mars, alone. The being has vanished. But the message is clear.
He must warn Earth. The antenna must be repaired. Tomorrow, everything changes.