What is the diameter of the Milky Way in light years?

1 Answer
Feb 11, 2016

Earlier approximation 150000 ly across is currently revised to 130000 ly.

Explanation:

The precision in the measurements in ly is now limited to 2 significant digits (sd) only. !5 became 13, in 10000 ly as unit..After confirming these digits, the march would be towards lower-valued sd, using further advances in theory, instrumentation and technology.