Yeah, basically. If you were to hitch a ride on this particle, those 215,000 years would go in a flash (basically, how much time it takes light to travel a cent

Yeah, basically. If you were to hitch a ride on this particle, those 215,000 years would go in a flash (basically, how much time it takes light to travel a centimeter). Wherever your final destination was, you would have aged a few fractions of a second but you just traveled nearly 215,000 light years.