Astronomy Night: Autumnal Equinox

Tuesday, Sept. 22, 2026
8-10 p.m.
Location: Great Lawn

Celebrate the autumnal equinox with an evening beneath the stars at Discovery Park of America. Join Dr. Lionel Crews of the University of Tennessee at Martin Astronomy Department for a special evening celebrating the equinox and the beginning of astronomical fall.

Guests will learn about the changing orientation of Earth as it orbits the Sun and why the solstices and equinoxes have held significance throughout history. If skies are clear, guests can take a closer look at the night sky through telescopes and discover more about the celestial world above.

You will discover:

• What makes an equinox different from a solstice
• Why the autumnal equinox marks the beginning of astronomical fall
• How Earth’s orbit and axis affect the length of day and night
• The opportunity to observe the night sky through telescopes, weather permitting

Passport to the Universe

This event is part of Discovery Park of America’s Passport to the Universe program, a free astronomy series open to all.

This is the seventh class of 2026. Participants who attend five or more classes during the year will receive a unique 2026 commemorative patch. Don’t forget to bring your passport if you already have one.

This event is free to the public.