Chris Astronomy Crossword
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Down:
1) A satellite that, by its gravitational field, confines particles to a planetary ring.2) The heating of a planet or satellite because of friction caused by tides.3) Smaller than Earth's moon, mostly rock and ice, surface is ice.4) Half the diameter of Earth, mixture of rock and ice, heavily cratered.5) Larger than Mercury, over 3/4 diameter of Mars, rocky core, ice rich mantle, smaller iron core.7) The passage of an extrasolar planet across the disk of it's parent star as observed from Earth, partially blocking the light from the star and allowing detection and study of the planet.9) The passage of a larger body in front of a smaller body.11) The minimum distance between a planet and a satellite that holds itself together by it's own gravity. If a satellite's orbit brings it within it's planet's Roche Limit, tidal forces will pull the satellite apart. |
Across:
6) Giant ice moon with a thick atmosphere.8) Surface is dominated by nitrogen.10) A form of hydrogen under high pressure that is a very good electrical conductor.12) Gaseous sulfur and oxygen atmosphere ions produce a cloud of sulfur and sodium ions in a torus13) Pluto's big spherical moon, dwarf planets.14) The flattening of a spherical body usually caused by rotation15) Violent past, icy mantel, heat from interior, craters. |
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