Apparent magnitude and absolute magnitude.
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∙ 12y agoTwo ways are by temperature and brightness
Blue Supergiants and Supergiants
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
two ways are diffuse and regular reflection
No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)
Two ways are by temperature and brightness
Two ways are by temperature and brightness
Blue Supergiants and Supergiants
false
Their distance away from you and their intrinsic luminosity.
Two stars revolving around one another (around their center of mass, to be precise) are called a "binary star". There is no special name for the case that the brightness is unequal; this is actually the usual case.
The two ways are by their surface temperature (spectrum) and by their absolute magnitude (intrinsic brightness). The HR diagram has spectrum along the horizontal axis and absolute magnitude along the vertical axis. Each star occupies a point in the HR diagram.
Two factors that affect a star's apparent brightness are: 1.) The distance between the Earth and the star 2.) The absolute magnitude (the actual brightness) of the star Hope that helps :P
by using the distance from Earth to various galaxies and by calculating the ages of old, nearby stars.
two ways are diffuse and regular reflection
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No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)