Podcast Beta
Questions and Answers
The star's brightness as seen from Earth is its _______________ brightness.
apparent
A star's _______________ brightness is the brightness the star would have if all stars were the same standard distance from earth.
absolute
The distance that light travels in one year at a speed of 300 000 km per second is called a _______________ year.
light
The closer a star is to Earth, the greater its apparent change of _______________.
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Astronomers group stars into five types: Neutron stars, white dwarfs, medium-sized stars, _______________, and supergiants.
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A light year is about 9.5 trillion ______ or 9 500 000 000 000 km.
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The closest star is Proxima Centauri, 4.2 ______ years from Earth.
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The most element in stars is ______, the lightest element that make 60% to 80% of the total mass of a star.
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Polaris, commonly known as the ______ Star, is the brightest star in the constellation Ursa Minor (Little Dipper).
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Stars are used to tell the time at ______.
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