| Answer | Crossword Clue |
|---|---|
| SPACEAGE | Period beginning with Sputnik |
| SPACEAGE | Period that started with Sputnik |
| SPACEAGE | Period that began with Sputnik I's launch |
| RESTORATION | British period beginning in 1660, with "the" |
| SPACEAGE | Period of Sputnik and Apollo 11 |
| LENT | Period beginning Ash Wednesday |
| EPOCH | Beginning of a historic period |
| LENT | Period beginning on Ash Wednesday |
| ADVENT | Period beginning four Sundays before Christmas |
| BRONZEAGE | Period beginning circa 3500 B.C. |
| IRONAGE | Period beginning in about 1000 B.C. |
