Here's why:

* The Speed of Light: Light travels at a constant speed of approximately 299,792,458 meters per second (186,282 miles per second) in a vacuum. This is the fastest speed anything can travel in the universe.

* Rocket Speeds: Rockets, even the most advanced ones, travel at significantly slower speeds compared to light. The fastest rocket ever launched, the Parker Solar Probe, reaches speeds of approximately 430,000 mph (692,000 km/h), which is still a tiny fraction of the speed of light.

Important Note: Einstein's theory of relativity states that nothing can travel faster than the speed of light.