How do we know the distance of stars? If we look east and see a star that is 100 million light years away, then look west and see a star that is 500 millions years away, how can we tell the difference?
1 Answer
Mar 16, 2017
Astronomers have different scientific methods to calculate distance to stars.
Explanation:
Near bye stars.stellar parallax.
standard candles. variable stars.
Type !a supernova.
for details read Wikipedia cosmic distance ladder.\
link https://en.wikipedia.org/wiki/Cosmic_distance_ladder
