Related Clues:
- Cow's hurdle, perhaps
- Astronomical flare-up
- Source of a stellar explosion
- Star of inconstant brightness
- Sudden super star
- Cow's hurdle?
- It may wax
- Bottom out?
- Titan, to 9-Down
- Science series
- Unification Church head
- Twelve men have walked on it
- July 1969 landing site
- "One giant leap for mankind" site
- Bygone Chevy compact