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Star Vocabulary

Across
Something you can't see but has a strong gravitational pull
The degree of brightness of a star as it appears to us
the technique of splitting light into its constituent spectrum
type of telescope that uses light outside the visible spectrum to find cooler stars or those that are hidden by dust clouds
occurs when a planet passes between a star and its observer
Down
a rapidly rotating neutron star that emits regular pulses of radio waves and other electromagnetic radiation
the intrinsic brightness of a celestial object
Billions stars, together with gas and dust, held by a gravitational attraction
a large explosion that takes place at the end of a star's life cycle
a ball of matter that is contracting to become a star