Calling all science enthusiasts.

The Ontario Science Centre is turning 50 this weekend and you’re invited to join in on the fun.

This two-day birthday bash will offer visitors free general admission this Saturday and Sunday (September 28 and 29).

Presented by TELUS, the 50th birthday party will feature exhibitions, presentations, demonstrations, and hands-on activities, including the new exhibition MindWorks, the installation Life of the Earth, and much more, at no cost.

Some of the main attractions to check out is MindWorks, an innovative Science Centre original exhibition that explores memory, creativity, emotions, and the mind’s inner workings with virtual reality, a large scale obstacle course, and a mega multiplayer decision-making competition.

Another must-see is Life of the Earth | Death of the Sun, a stunning new large-scale art installation about the Earth’s changing climate and the next mass extinction by Canadian contemporary artist Director X.

For the full lineup, including activity descriptions and times, visit the science centre website here.

When: September 28 and 29

Time: 10 am to 5 pm

Where: Ontario Science Centre, 770 Don Mills Road

Admission: Free!