- #1
Kamataat
- 137
- 0
Hi!
Let's say that astronomers observe some galaxy or something several million lightyears away and then come to conclusions about that object. But since the light from there has been on the way for millions or even billions of years, then is it correct, that they are actually seeing the object as it was back then? So any conclusions they may draw from these observations apply to that object as it was a long time ago and not today?
So my questions is: what effect, if any, does this have on science? For example when they try to fit together data from current lab experiments and observations of ancient evets, i.e. they sky must have changed since then and so any theories we apply to those events only describe those ancient things and not the current universe (in the cosmological sense)?
- Kamataat
Let's say that astronomers observe some galaxy or something several million lightyears away and then come to conclusions about that object. But since the light from there has been on the way for millions or even billions of years, then is it correct, that they are actually seeing the object as it was back then? So any conclusions they may draw from these observations apply to that object as it was a long time ago and not today?
So my questions is: what effect, if any, does this have on science? For example when they try to fit together data from current lab experiments and observations of ancient evets, i.e. they sky must have changed since then and so any theories we apply to those events only describe those ancient things and not the current universe (in the cosmological sense)?
- Kamataat