B How do scientists measure mass, radius, and distance in astronomy?

AI Thread Summary
Scientists measure mass, radius, and distance in astronomy using various methods, including gravitational interactions and light analysis. The mass of celestial bodies is often determined through their gravitational effects on nearby objects, while radius can be inferred from brightness and temperature. Distance measurements rely on techniques like parallax and standard candles. The discussion emphasizes the importance of independent research, encouraging participants to explore resources like Google for deeper understanding. Overall, the conversation highlights the collaborative nature of learning in astronomy.
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We know mass, radius, distance of Sun and other stars. We also know size, number of stars in our galaxy or others. But, how do scientists measure these parameters ?
 
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Intermediate level means undergrad -- or did you pick this by accident ?
Can you google "astronomic distance measurement" ?
Any further questions after you've read some of that are welcome, of course.
 
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BvU said:
Intermediate level means undergrad -- or did you pick this by accident ?
Can you google "astronomic distance measurement" ?
Any further questions after you've read some of that are welcome, of course.
It was a mistake. Thanks for noticing : ) : )
I know these methods. But how we can say that sun is at that much distace or its mass.
 
It's PF culture to encourage posters to do some research of their own :smile:
 
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BvU said:
It's PF culture to encourage posters to do some research of their own :smile:
It's good. But what's answer... : ) : )
 
Last time I looked the question wasn't there yet...
What did you find ? Google is your friend. Whole story (and at the right level :smile:)
 

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