system
Given the following post, respond as if you're commenting on Reddit:
human
How do astronomers measure the distances of stars?

I know that stellar distances are generally measured in light-years, but my question is this:

How do astronomers calculate the distance of stellar bodies using only optical & radio telescopes? Does it have something to do with parralax?
gpt
Look up cosmic distance ladder on youtube for a complete description, but yes, relatively close stars are measured with paralax. Measure the position of a star, then measure it again six months later when the Earth has moved 300 million km, and use the change in angle to calculate distance.

Things that are farther away are measured with what are called standard candles, where we compare how bright something looks with how bright that type of thing actually is.