btifuldreamer wrote:I think i'm gonna be an astronomer when i'm older Well, i'm interested in space right now at least. I recently looked at the Hubble deep field thing which involves the most important image of all time. This made me remember how my dad told me that when you look into space, you are looking at the past because of how fast light travels. If you were to place a mirror on the moon and look at it, you will see about 2.5 seconds into the past. What i am wandering is if this is true, why don't they make a telescope to look at Earth from far away and see the past? What are your thoughts...
1. to get the mirror far enough away to see that far back you'd need to place that mirror 98,000 miles away per second of time you want to see back into.
2. you would also need to have instantaneous for of travel otherwise more time would pass than you could virtually see back into.
3. the ability to focus light enough or build a mirror big enough to actually "see" anything from that far away does not exist.
I didn't read anyone elses responses so I hope I didn't repeat to many people.
PS Spectrophotometry is the future of astronomy!