Across
- 1. A symbol or a combination of symbols used in algebra, containing one or more numbers, variables, and arithmetic operations
- 4. Involving the second and no higher power of an unknown quantity or variable.
- 5. A word or phrase used to describe a thing or to express a concept, especially in a particular kind of language or branch of study.
- 8. the intrinsic brightness of a celestial object (as distinct from its apparent brightness diminished by distance).
- 9. the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs.
Down
- 1. the magnitude of a celestial object as it is actually measured from the earth.
- 2. A relationship or expression involving one or more variables.
- 3. hypotheses
- 6. A quantity expressed as a sum or difference of two terms.
- 7. The branch of science which deals with celestial objects, space, and the physical universe as a whole.