what speed are we doing

thanks for both replies. As for the circumference of our galaxy...sorry must have being thinking about another galaxy :oops:

I know it's probably all a little complicated, and if someone gave me the answer - I might not understand it. I have often wondered how fast our spiral arm was rotating around the centre of the galaxy.

Now, nobody wreck your head trying to get an answer, but It would not surprise me if someone out there had that number to hand - like i said just curious :

thanks, understand that. the relative bit I mean. earth moving, sun moving, galaxy moving....head hurts now

I know it's probably all a little complicated, and if someone gave me the answer

assuming we are talking about the earth moving in a circle relative to the center of the galaxy then its (26000 ly *2*PI) / 220,000,000 years

Its the converting to MPH thats the annoying bit Should be of the order of half a million miles an hour.

We are also moving with the Sun around the center of our galaxy and moving with our galaxy as it drifts through intergalactic space!

Which is what I thought the question was about.

oops

if the above figures give you the approximate circumference of the galaxy i.e. X3 - then how fast are we (earth) going in MPH ?? Confused

This is a trick question. You see to calculate the speed at which we are moving it all depends on which way the smoke is blowing.

thanks for the answers lads


(500,000MPH I knew it...I knew it...that explains the dizzy spells)

Declan


"Captain Slog Star Date 230108.9"