Evidence We are Inside A Supernova Remnant.

originally posted by: BGTM90
a reply to: JadeStar

yes but the super nova happened only 10 million years ago and sense speed is relative and those stars where also moving around the galaxy at approximately the same speed

Not necessarily.

sense they where approximately the same distance ~ 300 light years from earth. Would the remnants also not be moving with us? I'm sure the relative speed was not zero but it probably wasn't the 20 km/sec. that we are going around the galaxy. My point being that the supernova where probably relatively close to the earth. And it would have been a tremendous sight in the sky.

The speeds may be similar but the trajectories/orbits are not identical. We're not all moving in the same way lock step. There are gravitational interactions over time which change the speed and slightly alter the orbits of individual stars around the galaxy. If you saw a time lapse of a simulation of how just the stars within 2500 light years of the Solar System move over the span of a billion years you'd see different paths and speeds.

This is why it is so difficult (bordering on nearly impossible) to locate the other siblings the Sun was born with out of the stellar nursery or even where that stellar nursery was in relation to us.