Question #99bdf
1 Answer
Dec 29, 2016
For nearby stars, a method called
Explanation:
Parallax is used to see how nearby stars are moving as compared to the stars behind them. You have experienced this when you are travelling in a car or train. As you move forward, the houses near to the vehicle goes behind faster. But the houses at a distance seems to go behind slowly. This is how parallax looks like:
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For much more distant stars, standard candles are used. If we know the luminosity we can calculate distance.
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For most distant stars Type Ia supernovae is used. Please read this detailed [article.](https://en.wikipedia.org/wiki/Cosmic_distance_ladder)
