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

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    Astronomy Measurements
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Discussion Overview

The discussion revolves around the methods used by scientists to measure mass, radius, and distance in astronomy, specifically focusing on celestial bodies like the Sun and stars within galaxies. The scope includes conceptual understanding and practical measurement techniques.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants inquire about the specific methods used to determine the mass, radius, and distance of the Sun and other stars.
  • One participant suggests searching for "astronomic distance measurement" as a resource for understanding these concepts.
  • Another participant acknowledges familiarity with the methods but seeks clarification on how definitive measurements are made regarding the Sun's distance and mass.
  • There is a mention of the community culture encouraging independent research before seeking answers.

Areas of Agreement / Disagreement

Participants express varying levels of familiarity with the topic, and while some encourage self-research, there is no consensus on the specific methods or answers to the original question posed.

Contextual Notes

The discussion reflects a mix of knowledge levels among participants, with some expressing confidence in their understanding while others seek more detailed explanations. There are no resolved mathematical steps or definitions provided.

Who May Find This Useful

Individuals interested in astronomy, particularly those looking to understand measurement techniques in the field, may find this discussion relevant.

A Alex P
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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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