It is said that the light we see from a star a million light years away is actually what happened a million years ago, that we are not seeing it at it's present state. For example, we see an explosion from a star that is a million light years away, then that means that star in real time had not really existed for the past million years, we are only now seeing its destruction because the light took a million years to reach us. Now it is also said that as I reach the speed of light, that time slows down for me. It effects every molecule of my body somehow. I approach the speed of light, people on earth will still continue to grow old faster, or there cells will continue to decay at the normal rate, where mine somehow will be affected and not decay as fast. Now with all this taking place as we approach the speed of light, wouldn't the same effect be the same with what we where seeing from the light of the planet that is 1 million light years away? Wouldn't time slow down around the light that we see coming from that star making it possible that what we are seeing really didn't take place million years ago, but maybe billions of years ago? Or maybe the image we see is only a few thousand years old because things slow down as we approach the speed of light. My question is, how do we know for sure that the light from a star a million light years away really took a million years to reach us?