Sharon Gilbert (13 May 2018)
"Is there a Sign in the Sky this week for the rapture?"

Both the moon and Venus will be in Gemini, shortly before Pentecost next weekend.  Here it is pictured at "This Week's Sky at a Glance" from "Sky and Telescope":

This Week's Sky at a Glance, May 11 19 - Sky & Telescope

"The tenth zodiac constellation is Gemini, the Twins, with one usually being considered immortal and the other mortal - the Immortal One who comes at the Second Coming is the same as the mortal Son of Man who came at the First Coming. So, Gemini symbolizes the dual nature of the Messiah (that Jesus Christ is both fully God and fully human): Suffering Servant and Conquering King."

"The moon is a messianic Bride symbol just as the sun is a messianic Bridegroom symbol. Just as the moon has no light of its own but reflects the light of the sun and therefore shows its glory, so is the Bride with the Bridegroom."

Revelation 22:16: "I am the root and the descendant of David, the bright morning star.

Jesus is represented by Venus as the morning star.  "In ancient literature, the planet Venus is often referred to as the morning star, and still is today. . . While Jupiter and Mars and other planets can appear in the morning or evening sky, Venus does so consistently and is far brighter than the others.