Question

Question #02706

Answer 1

For nearby stars w use parallax method(Trinagfulation based on Eart's orbit

Explanation:

Other methods are standard candles (Cepheid variables wirth known luminosity)\
Type 1a supernova for distant galaxies.
see this video link for details https://gizmodo.com/how-to-measure-distance-in-space-1644703716..