NASA Administrator Jared Isaacman(@NASAAdmin):Congratulations, Alex, and thank you for your years of accomplished service at @NASA. We look forward to continuing our partnership and building an exciting future in space and on the Moon together!

NASA Administrator Jared Isaacman

@NASAAdmin

Serving President Donald J. Trump as the 15th @NASA Administrator | Leading the next Golden Age of space discovery 🚀

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NASA Administrator Jared Isaacman@NASAAdmin

2026.11.05 16:00

Congratulations, Alex, and thank you for your years of accomplished service at @NASA. We look forward to continuing our partnership and building an exciting future in space and on the Moon together!

Canadian Space Agency@csa_asc

2026.11.05 01:09

The Government of Canada announced that Alexander MacDonald has been appointed President of the Canadian Space Agency and will join us on November 16, 2026. We look forward to welcoming him!🚀