Last night, while I was reading Richard Dawkins excellent 2011 book for teen-age children (though in all honesty most adults would benefit from reading it too) “The Magic of Reality – How We Know Whats Real?”, a chilling thought occurred to me.
Premise: A telescope can work like a time-machine. What we see when we look at anything is actually light, and light takes time to travel, about 300,000 kilometers per second. Considering cosmic distances, that’s not so awfully fast. As a result, if you look at the nearest star Proxima Centauri in 2012, what you’re seeing is happening in 2008. We are in the Milky Way galaxy. When we look at our next-door neighbor, the Andromeda galaxy, we are looking 2 and a half million years back in time. Continue reading