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Unit 3B

Across
A spherical region that surrounds the solar system, that extends from the kuiper belt to almost halfway to the nearest star, and that contains billions of comets.
behave or move in a listless and aimless manner
The average distance between the Earth and the sun.
One of the highly dense planets nearest to the sun.
A meteoroid that reaches Earth's surface without burning up completely.
One of the hundreds of thousands of minor planet-sized objects that orbit the sun in flat belt beyond Neptune's orbit.
A small body that gives off gas and dust as it passes close to the sun.
The counterclockwise spin of planet about its axis as seen from above the planets north pole.
A break of light that results when a meteoroid burns up in Earth's atmosphere.
the gaseous envelope surrounding the earth; the air.
Down
The motion of a body that travels around another body in space.
A celestial body that orbits the sun, is round because of its own gravity, but has not cleared its orbital path.
The spin of a body on its axis.
A small, rocky object that orbits the sun.
A region of the solar system that is just beyond the orbit of Neptune and that contains small bodies made mostly of ice.
A relatively large spherical body that orbits a star
the cup-shaped depression or cavity on the surface of the earth or other heavenly body marking the orifice of a volcano.
A relatively small, rocky body that travels through space.
The clockwise spin of a planet about its axis as seen from above its north pole.
A spherical cloud of gas and dust that comes off the nucleus.