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What is the measured parallax of stars used for? Which is brighter, magnitude 5 or magnitude 0?

Posted on October 26, 2022 by Shady

Science
Part 1 Study Questions
What is the measured parallax of stars used for?
Which is brighter, magnitude 5 or magnitude 0?
What two things does a star’s apparent magnitude depend on?
What one thing does a star’s absolute magnitude depend on?
What is a star’s luminosity?

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