Related Clues:
- Famous bell, swapping E for A and G first thing?
- 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
- Kind of lox
- Long-running PBS science series
- Astronomical figure?
- Cold-smoked salmon
- Universe starter, some say
- Universe start
- Brilliant 13-Down