Glossary
Astronomer:
An expert in astronomy; a scientific observer of the celestial bodies.
Tantalizing:
Having or exhibiting something that provokes or arouses expectation, interest, or desire, especially that which remains unobtainable or beyond one's reach.
Reservoir:
A natural or artificial place where water is collected and stored for use, especially water for supplying a community, irrigating land, furnishing power.
Asteroid:
Also called minor planet. Small bodies from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun.
Meteor:
A transient fiery streak in the sky produced by a meteoroid passing through the earth's atmosphere; a shooting star.
Radiation:
A process in which energy is emitted as particles or waves.
