Can we look at our own past?

Hi! I don’t have specific skills in Astrology but I wanted to put an idea out there anyway. I start with something we often hear when we hear about the James Webb Telescope: we look into the past.

My question would be: can we look at a mirror-like entity far deep in space in order to be able to get a picture of Earth but as it was millions years ago? Even if it’s only about its composition or its position in the universe that would be surely interesting.