"The light we see is old. It’s of interest for studying the science of bright old things but for anything contemporary it is useless. If you ignore our own star

"The light we see is old. It’s of interest for studying the science of bright old things but for anything contemporary it is useless. If you ignore our own star and count out the ancient starlight, the sky is completely dark to us." Even sunlight is really old. The photons from our own star, the sun, were produced 100,000 years ago. That's how long they take to make their way to the surface from center of the sun where the nuclear fusion occurs.