The launch window for Space Concordia’s Starsailor rocket suborbital launch is open, however the current weather is preventing a launch attempt.

Weather in the Mistassini area currently includes rain showers today and tomorrow during the launch window, with a possibility of thunderstorms.

A source reports to SpaceQ that the likeliest earliest launch attempt could be Sunday, August 10 when the weather improves. The weather window currently looks good between Aug. 10-12.

The Space Concordia team was able, according to our source, perform “a critical pre-launch cryo test” Thursday night.

Stay tuned for updates as they come in.

Update August 8, 2025 – 4:30 p.m. EDT: SpaceQ heard from Oleg Khalimonov, Program Lead, Space Concordia that a possible launch could happen Monday. As well Oleg said “we’ve conducted 2 wet dress rehearsals, with two more scheduled for this weekend.”

As Space Concordia works towards a suborbital launch as early As August 11, 2025 they are conducting a series of wet dress rehearsals. Here is one of the tests. There is no sound. Footage provided to SpaceQ by Space Concordia.

Marc Boucher is an entrepreneur, writer, editor, podcaster and publisher. He is the founder of SpaceQ Media. Marc has 30+ years working in various roles in media, space sector not-for-profits, and internet content development.

Marc started his first Internet creator content business in 1992 and hasn't looked back. When not working Marc loves to explore Canada, the world and document nature through his photography.

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