| A | B |
|---|
| Axis | An imaginary line through the center of rotation of an object |
| Comet | A gigantic ball of ice and rock that orbits the sun in a highly eccentric orbit |
| Corona | The outer part of the Sun's atmosphere |
| Deimos | The smaller and outer of Mars two moon |
| Eclipse | The total or partial blocking on one celestial body by another |
| Galaxy | A large grouping of stars, may be found in a variety of sizes and shapes |
| Gibbous | One of the phases of the Moon, when the size of the illuminated portion is greater than half but not a full moon |
| Lunar | Relating to the moon |
| Maria | Smooth, dark-colored areas on the surface of the Moon |
| Meteor | A small particle of rock or dust that burns away in the Earth's atmosphere |
| Nebula | The birthplace of stars. A cloud of dust and gas in space, usually illuminated by one or more stars. |
| Neutron Star | A compressed core of an exploded star made up almost entirely of neutrons. |
| Equinox | The two points at which the Sun crosses the celestial equator in its yearly path in the sky. |
| Fusion | The process by which two or more atomic nuclei join together, or fuse to form a single heavier nucleus |
