I like science fiction, I like fantasy, I like time travel, so I had this idea: What if you had a phone that could call into the past?

Love is the net profit on life.

Science fiction is filled with Martians and space travel to other planets, and things like that.

'Farscape' is not what you call hard science fiction.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It's like time travel problems in science fiction. When is now; when was then?

If time travel is possible, where are the tourists from the future?