Astro-Overnights: Expedition E.T.


Do you want to go on an out-of-this world adventure, spend the night at the museum and help us solve an alien mystery? Now’s your chance! Explore the planetarium and use your science sleuthing skills to learn more about these enigmatic extraterrestrials at Astro-Overnight—Expedition E.T.! Overnighters will try to solve a unique space mystery through a variety of programs, sky shows, and much more.

Don't miss your chance to spend the night at the museum!

What Is Included

• Unlimited access to all of our exhibitions and experiences.
• Hands-on science activities with an alien twist!
• Two amazing sky shows, one exclusive to Astro-Overnight guests.
• A light night-time snack & continental breakfast.

An evening only option is also available for those who want to enjoy all of the programming, but can’t stay the night. Please note that Astro-Overnights are limited to children ages 6-12 with their families, scout group, or other special group. All children attending the evening-only portion or the full Overnight MUST be accompanied by an adult.


Overnight (5pm Friday–8am Saturday): $60 per person/$55 per member or groups of 15 or more
Evening only (5:30–11pm): $30 per person/$27.50 per member or groups of 15 or more
VIP Sleeping Option*: For $70 per person, you can sleep under the “stars” in our Grainger Sky Theater for a truly magical experience!

*VIP Sleeping Options for 3/3 and 4/7 are sold out.

Questions? Contact us at

Parking is not included with the price of the Astro-Overnight

Not sure what to do about dinner?

Let the Adler take care of that for you! For just $11 per person, you can pre-order dinner to be ready when you arrive. Dinner includes a personal cheese pizza, chocolate chip cookie, and a fountain drink. Dinner will be available for pick-up from 5–8pm.

Galileo’s Café is open during Astro-Overnights from 5–8pm with several menu options.


If you are a group leader of 15+, please contact us so we can check availability and get you registered.


Families or groups of 14 or less, please select from the options below.

Astro-Overnight Family Guide
Astro-Overnight Group Guide

What Others Say

“[The] memories are priceless. I enjoyed seeing my daughter having fun while learning about our solar system.”

“[It was a] great opportunity to spend time with my daughter while exposing her to educational material at the same time.”

“Being able to go through the exhibits with a limited crowd, see [two] shows, and sleep the night in the exhibits was worth the money. My daughter had a blast and this is something she would want to do again (and bring her sister with us next time).”

From Our Shop

store1_630x380Pick up an Astro-Overnight patch! Pick it up in the Adler Store (not available online).

A Thank You to our sponsor:


A Thank You to our media sponsor: