Event Date:
Saturday, May 30, 2026 - 9:00pm to 11:00pm
Event Location:
Come celebrate over 90 years of science and outreach done at the Richmond Hill David Dunlap Observatory.
Participants will hear an engaging presentation explaining, in simple language, how important discoveries at the RHDDO were actually made, like Tom Bolton's discovery of Cygnus X-1, the first known Black Hole.
Historical records and artifacts involved in the discoveries will be on display, and viewing through the 74-inch telescope will be provided (weather permitting).
Registration is required. Click HERE to register
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