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Related Clues:
- Star that suddenly increases in brightness
- Universe seen as a whole
- Chevy of yore
- Super star last to condemn eggs
- Carl Sagan topic
- Carl Sagan's fascination
- '80s best-selling science book
- Cataclysmic nuclear explosion
- TV science series
- Most definitely not leading Virginia to become a bright star
- Popular PBS series
- Series with a ''Secrets of the Sun'' episode
- Faint star that suddenly flares into brightness and then fades again
- Long-running PBS show
- Old Carl Sagan series