
Here are some suggestions to get you started in the right direction:
For your centerpiece: A pedestal with a Sundial or Astrolabe on top.
MOONbeam (Coreopsis)
MOONflowers - (Calonyction)
MOONshine (Achillea)
Golden Full MOON Maple (Japonicum Aureum)
SUNflowers
SUN Power (Hosta)
SUNrise (Lupin)
SUN Rose (Helianthemus Nummularium)
SOLAR Flare (Hosta)
VENUS Fly Trap
VENUS Looking Glass (Specularia Campanulaeae)
Blazing STAR (Liatris Spicata)
Blue STAR (Stokesia)
Gold STAR (Dogwood Cornus kousa)
Shooting STAR (Dodecatheon Primulaceae)
Summer STARS (cornus kousa)
Bright STAR (Echinacea E. purpurea)
STARfire (Phlox)
STARGAZER - Day Lily
STAR of the Veldt (Osteosperimum)
STAR Parade (Schizanthus)
Flower of JOVE (Lychnis flos-jovis)
JUNO Series (Primula)
JUPITER'S Beard (Centranthus Ruber - a red bushy member of Valerian family)
Japanese ANDROMEDA
ASTEROID (Primula)
ASTEROIDES (Boltonia)
COSMOS
Keys of HEAVEN (Centranthus ruber 'Coccineus')
NATAL Lily (Livia Miniata)
Blue HEAVEN (Delphinium)
Queen of the PLANETS (Pansy)
VULCAN (Malope)
DAY Lily
MORNING Glory
NIGHT blooming Cirrus
NIGHTshade
And last but not least, for dessert, try a MOON and STARS watermelon!