Adler After Dark: Cosmic Caper | April 18

Adler After Dark | Cosmic Caper

What is Adler After Dark?

Exclusively for adults 21+, this evening offers you open access, unlimited shows, and unique entertainment every third Thursday of the month from 6:00–10:00 pm (Summer hours, May-August: 6:30–10:30 pm.)  With themes that change every month, Adler After Dark is never the same event twice. Reinvent your Adler experience every month with friends, family, or that special someone on a date they’ll never forget.

April 18: Cosmic Caper

Something is amiss at the planetarium!

You’ve just received a cryptic letter from an old associate—they want you to attend a gala at the museum and recover an artifact of great value hidden in the exhibits. Can you follow a series of elaborate clues, solve cryptic puzzles, uncover the mole, and find the item before more sinister people do? Time is running out, and only YOU and your crew can solve this caper of cosmic proportions.

In between your sleuthing, don’t forget to:

  • Try a special beer brewed just for the event in collaboration with our friends at Empirical Brewery
  • Check out a special talk by Adler astronomer Mark Hammergren and curator Pedro Raposo on some of astronomy’s greatest mysteries and the history of searching for “hidden things” in the cosmos
  • Enjoy special performances by Lakeside Pride Music Ensembles, a musical organization committed to the education of the LGBTQ community through public musical performances

It’s a mystery to end ALL mysteries this April at Adler After Dark. Make James Bond, Charlie’s Angels, and Maxwell Smart proud and don your best sixties-era formal wear!


Advance Purchase: 
$20 General Admission/$15 Adler members

At the Door (Based on Availability):
$25 General Admission/$20 Adler members

Doane Tours:
$8 General Admission/$8 Adler members

Doane Observatory tour tickets are available in limited quantity and sell out quickly. Tours last approximately 15 minutes and are always scheduled after sunset. Tours are subject to cancellation due to weather conditions.

Please be aware that event capacity is limited and likely to sell out. Purchase your tickets online before the day of the event as tickets may not be available at the door. Check back for up-to-date ticket availability details. For group (15 or more) or corporate booking, please contact Please bring your photo ID on the day of the event.

Read Our FAQ

Need some Adler After Dark costume inspiration? Check out some of our photo albums of past AAD attendees! If you’re planning on attending an Adler After Dark event in costume, please see our Cosplay & Costuming Weapons Policy.