The evening star can be seen beneath the moon.
evening star definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a bright planet, esp. Venus, that can be seen in the W sky soon after sunset
evening star definition by American Heritage Dictionary
A planet, especially Venus or Mercury, that is prominent in the west shortly after sunset.