The Solar System Crossword

_________ is the sixth planet from the sun and the second largest planet in the solar system.
It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System.
A scientist who makes observations and studies planets, stars, galaxies any anything else in space.
A small frozen mass of gas, dust, and ice, comets revolve around the Sun or pass through the Solar System in elliptical orbit.
"The Planet of Oceans"
A hole formed by a meteorite hitting the surface of a planet or a moon dark matter.
Units used to measure distance in space.
the galaxy that contains the solar system
The sun, and all the planets and other objects that orbit around it.
The space that contains all of the matter and energy in existence.