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Related Clues:
- Carl Sagan PBS series
- Astronomical wonder
- Result of runaway fusion
- Earth and beyond
- Astronomical discovery
- Milky Way phenomenon believed to occur almost weekly
- Everything bagel topper
- PBS series since 1974
- Star that brightens suddenly
- GM nameplate
- Fading star
- PBS classic
- Star that becomes much brighter for short time
- The whole universe
- A new flaring star