Last seen in:
Related Clues:
- 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
- Brilliant 13-Down
- PBS show with episodes about tornadoes and catacombs and the like
- Exploding star that becomes extremely luminous
- Scene of runaway nuclear fusion
- PBS series since '74
- Star that ejects a cloud, thus becoming brighter
- Distant flare-up