It can be fun to toy with the idea of transmissions through time.  Gregory Benford’s TIMESCAPE take the concept literally.  Most serious science fiction can be taken as warnings from alternate potential tomorrows.

This Cli Fi game sends clues from the future… Chronofacts brings messages from a variety of possible futures—some pleasant, others apocalyptic. These clues make up the basis of FutureCoast, a collaborative storytelling game that explores what people in the present think about how climate change will affect their future.

Speaking of messages from the beyond… here’s an uber-cool animation of what will happen in 4 billion years, when the Andromeda Galaxy collides with ours. Plus some highly evocative artist conceptions of what the sky might look like from the surface of Earth about that time. Of course, it takes our solar system over 200 million years to orbit the…