Recently, the James Webb Space Telescope observed signals that moved faster than the speed of light. Does this mean that faster-than-light travel is real? If not, what explai ...

The light echo around the star V838 Monocerotis as seen by the Hubble Space Telescope in November 2005. When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I ...

This Star Trek concept ignited a dream that humans could one day travel faster than the speed of light. Now physicists are ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...