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

All the stars that we can see in the sky are relatively close by, within about a hundred light years (the galaxy is a hundred _thousand_ light years across). This local group of stars travels around the center of the galaxy at about the same speed, so the speed of the Sun relative to the nearby stars is low, compared with the distance to these stars. Also distances in space are very, very large. Unimaginably large. You literally have no idea how big interstellar space is.