Frostlights: A Winter Galaxy of Light and Sound at Yerkes Observatory
Join us this winter for Frostlights, a new immersive experience for all ages.
Yerkes Future Foundation Announces Second Annual Fall Fundraiser: “Cosmic Construction”
Yerkes Future Foundation announces its second annual Fall Fundraiser, Cosmic Construction, taking place on Saturday, September 12, 2026.
Exploring the Night Sky with the 24″ Reflector
The Great Refractor is under restoration this fall — join limited tours featuring our 24″ Reflector instead.
Save the Date for our Fall Fundraiser
Save the date for our Fall Fundraiser at Yerkes Observatory — sponsorship opportunities are available now.
Exploring the Night Sky Tour Dates for Summer 2026
Summer 2026 tickets are now available for our after-dark Exploring the Night Sky tours with the Great Refractor.
2026 Speaker Series
Our 2026 Speaker Series lineup is here, featuring poet Nicholas Gulig, author Robin Wall Kimmerer, and more.
2026 Messier Marathon Open House
This sold-out Messier Marathon open house partners with the Milwaukee Astronomical Society for a night of stars.
Yerkes in 2025
A look back at 2025’s milestones in science, education, and the ongoing restoration of Yerkes Observatory.
Save the Dates! 2026 Open House Schedule
Save the dates for our 2026 Open House season, now with on-site parking instead of trolley transportation.
Exploring the Night Sky Tour Dates for Spring 2026
Spring 2026 Exploring the Night Sky tour tickets are on sale, now offered three times a week after dark.