Space Science Vocabulary Crossword

the path of an object in space as it moves around another object due to gravity
everything-space and all the matter and energy in it
a group of millions of stars held together by their own gravity
a group of stars that form a pattern in the sky
the distance between one wave peak and the next wave
the range of colors that appears in a beam of visible light
an object that orbits a more massive object
a spacecraft that passes one or more planets
a spacecraft used to study a planet over a long period of time
used to land instruments on a planet
the imaginary line which a turning body rotates
the motion of one object around another
patterns of temperature changes caused by the position of the Earth's axis relative to the direction of sunlight
the patterns of lit and unlit portions of the Moon as seen from Earth
the moon becomes dark because it passes through the Earth's shadow
the sun seems to darken because the Moon's shadow falls onto part of Earth
the darkest part of the shadow
a region of lighter shadow that surrounds an umbra