#nova

#nova

The joke is that the speed of light really is a cosmic law; to the best of our understanding, nothing can travel faster than light. Generations of Star Trek notwithstanding, this restriction isn't just some engineering limit, like the way the speed of sound used to be unsurpassable for airplanes (the phrase sound barrier was popular in sci-fi movies when I was a kid). The speed of light is the ultimate physical speed limit, a parameter woven into the fabric of the universe itself.