Editing Marc Garneau (section)

===44th Parliament and retirement===
Following the cabinet shuffle stemming from the [[2021 Canadian federal election|election in October 2021]], Garneau was dropped from Cabinet on October 26, despite being re-elected to his seat in the House.<ref>{{cite web|url=https://www.thestar.com/politics/federal/2021/10/26/justin-trudeau-drops-marc-garneau-from-cabinet-but-wont-say-why.html|title=Justin Trudeau drops Marc Garneau from cabinet, but won't say why|first=Alex|last=Ballingall|date=26 October 2021|access-date=2 November 2021|publisher=[[Toronto Star]]}}</ref> Some have speculated that Garneau did not remain in cabinet due to his age, being sacrificed in the name of gender parity, and that he reportedly refused to be subservient to the Prime Minister’s Office.<ref name="nationalpost.com"/><ref name="montrealgazette.com"/><ref name="theglobeandmail.com"/>

On March 8, 2023, Garneau announced that he would resign his seat and retire from politics.<ref>{{cite web| url=https://www.cbc.ca/news/politics/marc-garneau-resigning-1.6771673| title=Former cabinet minister Marc Garneau resigning from House of Commons| first=Richard| last=Raycraft| date=March 8, 2023| website=cbc.ca| url-status=live| archive-date=March 8, 2023| archive-url=https://web.archive.org/web/20230308165608/https://www.cbc.ca/news/politics/marc-garneau-resigning-1.6771673}}</ref> He gave his farewell speech in the [[House of Commons of Canada|House of Commons]] the same day.<ref>{{cite web| url=https://nationalpost.com/news/politics/liberal-mp-marc-garneau-resigning-his-seat| title= 'Great loss': Veteran Liberal MP Marc Garneau is resigning his seat| first1=Christopher| last1=Nardi| first2=Catherine| last2=Lévesque| website=nationalpost.com| date=March 8, 2023}}</ref><ref>{{cite web| url=https://www.ourcommons.ca/Content/House/441/Debates/166/HAN166-E.PDF#page=21| title=Debates of the House of Commons - Hansard No. 166 - 44-1| date=March 8, 2023| website=ourcommons.ca| page=21| url-status=live| archive-url=https://web.archive.org/web/20230309141311/https://www.ourcommons.ca/Content/House/441/Debates/166/HAN166-E.PDF| archive-date=March 9, 2023}}</ref> The [[2023 Notre-Dame-de-Grâce—Westmount federal by-election|by-election]] to replace him in parliament occurred June 19, 2023.<ref>{{Cite web |title=4 federal byelections set for June in Quebec, Ontario and Manitoba {{!}} Globalnews.ca |url=https://globalnews.ca/news/9697428/canada-federal-byelections/ |access-date=2023-05-31 |website=Global News |language=en-US}}</ref> Liberal [[Anna Gainey]] succeeded him, with almost as big a majority of votes as Garneau had won previously.

In retirement he continued to advocate for the advantages of human spaceflight in building space infrastructure for monitoring the planet and for communications.<ref>{{cite web |last1=Garneau |first1=Marc |title=When it comes to space, Canada has always reached for the stars |url=https://www.theglobeandmail.com/opinion/article-when-it-comes-to-space-canada-has-always-reached-for-the-stars/ |publisher=The Globe and Mail |access-date=1 April 2025 |date=4 October 2024 |quote="going to space is about much more than humans living on a space station or going to the moon or eventually to Mars. It’s also about building the invisible space infrastructure that helps us monitor what is happening to our planet, communicate with each other, predict the weather, measure our precise location, and understand the origins of our solar system and, perhaps, even of the universe."}}</ref>