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The study of outer space and all that it contains is called
astronomy
dark patches on the sun's photosphere are
sunspots
part of the sun visible only during a solar eclipse
chromosphere or corona
A high-speed stream of particles that travels outward from holes in the sun's corona and beats upon the earth's upper atmosphere
solar wind
three basic types of galaxy shapes are
spiral, elliptical, irregular
stars that outline a picture in the sky
constellation
familiar shape within the constellation Ursa Major which contains the pointer star
Big Dipper
the hottest region of the sun
core
streams of gas erupting from the chromosphere and returning in looplike fashion
solar prominence
spiral arms attached to a straight "bar" that runs through a galaxy
barred spirals
the force that resists motion
friction
an area that contains no air
vacuum
large clouds of gas and dust floating around in space
nebulae
the brightest star in the sky
Sirius
the pole star is known as the _______
Polaris
the closest star to the earth
the sun
