If spirituality means paying homage to the name of a god then astronomy is connected to spirituality. All of the planets (except Earth) are named after Greek and Roman gods/goddesses.

Mercury - named after the Roman god of travel
Venus - named after the Roman goddess of love
Mars - named after the Roman god of war
Saturn - named after the Roman god of agriculture
Jupiter - named after the king of the Roman gods
Uranus - named after the king of the Greek gods
Neptune - named after the Roman god of the Sea

• astronomy
• education
• science
• religion
• spirituality