eli5: If the sun revolves around the galaxy, why do we still see the same constellation that was discovered by the Romans (probably 1000s of years ago). surely they should have been scattered by now due to revolution of the sun combined with the revolution of the earth around with sun

Question

Thnx to all, for the answer. I had a good time discussing and clearing my doubt.

In: 179

Answer 1

Bruh we are talking distances of lightyears to millions of lightyears away. Over the timespan of humanity we will not notice the movement of stars and deep sky objects with our naked eye. In contrast with extremely high powered telescopes we can and have detected the movement of stars for example one of the lines of evidence for black holes came from the repeat observations of multiple stars orbiting rapidly around a central object in the centre of the galaxy with has been interpreted to be the event horizon of a black hole