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Sunspot maxima occur about every
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
Over time, we observe that a binary star system shows movement in the night sky which is described as
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
Two stars that revolve around each other are best described as
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
A stream of protons and electrons that travels from the Sun's corona at high speeds through the solar system are
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
Which occurred first?
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
A telescope that concentrates light from distant objects by using a concave mirror is a
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
Which of these stages occurred first in the life cycle of our Sun?
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
Astronomers can determine the ___ of a star by studying its spectrum.
a nebula
the solar wind
binary stars
An American spacecraft visits the far side of the Moon
chemical composition
11 years
one binary star will change its position as it revolves around the other binary star
reflecting telescope
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