Related Clues:

• Stretch of history
• Great times
• Astronomical periods
• Time and time again
• See 41-Down
• Astronomical figures
• Gets on in years
• Forever, seemingly
• Many a moon
• Ripens
• Entries in a family album
• A lo-o-ong time
• All the time in the world
• It 'waits at the crossway of the stars,' wrote Borges
• Continually