Fans of science fiction movies and TV know that behind aliens, space travel, and robots, time travel is, by far, one of the most beloved and often employed tropes of the genre. In fact, you could ...

From The Flash to Avengers: Endgame to 2002’s The Time Machine, time travel movies often follow characters hoping to prevent a present personal tragedy or larger calamity by tweaking some event in the ...

Forbes contributors publish independent expert analyses and insights. I cover aerospace, astronomy & hosted The Cosmic Controversy Podcast. As the recent Worldcon 2025 Convention here in Seattle ...