As an astrophysicist, my world revolves around the wonders of space and the mysteries of the universe. This means I can be a ...
A spacecraft traveling at 99 percent the speed of light toward Alpha Centauri would cross 4.3 light-years in what feels like ...
What would actually happen if a spacecraft traveled close to the speed of light? Einstein’s theory of relativity predicts bizarre and fascinating effects that would reshape how astronauts experience ...
If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of ...
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 ...