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Stack #859221
| Question | Answer |
|---|---|
| a natural or artificial body that revolves around a planet | satellite |
| a small body of ice rock and cosmic dust loosely packed together that follows and elliptical orbit and that gives off gas and dust in the form of a tail as it passes close to the sun | comet |
| any of 9 primary bodies that orbit the sun | planet |
| change in illuminated area of one celestial body as seen from another celestial body | phase |
| a model for the formation of solar system in which sun and planets condense from cloud of gas and dust | nebular model |
| smal rocky object that orbits sun | asteroid |
| planet that has deep, massive, atmospehere, such as jupiter, saturn, uranus, or neptune | gas giant |
| accumulatuion of matter | accretion |
| sun and all of planets and other bodies that travel around it | solar system |
| event in which shadow of one celestial body falls on another | eclipse |
| one of highly dense planets nearest sun | terrestrial planet |
| portion of earth that is water | hydrosphere |
| large cloud of dust and gas in interstellar space; region in space where stars are born or where stars explode at end of lives | nebula |