Elon Musk, astronaut Scott Kelly spar on Twitter over pronoun use

Elon Musk got into a Twitter spat with former NASA astronaut Scott Kelly on Sunday after the billionaire entrepreneur appeared to take another high-profile swipe at the LGBTQ community's use of gender pronouns.

"My pronouns are Prosecute/Fauci," Musk, who took control of Twitter in October, wrote, referring to chief White House medical adviser Dr. Anthony Fauci.

Musk’s tweet quickly went viral, amassing over 1 million likes and 100,000 replies by Monday afternoon.

One of those replies came from Kelly, who has commanded the International Space Station on three expeditions. The retired astronaut, who is also the twin brother of Sen. Mark Kelly, D-Ariz., scolded Musk for his flippant remark.

"Elon, please don’t mock and promote hate toward already marginalized and at-risk-of-violence members of the #LGBTQ+ community. They are real people with real feelings. Furthermore, Dr Fauci is a dedicated public servant whose sole motivation was saving lives," Kelly wrote.

Musk, who in addition to being at the helm of Twitter is also the CEO of SpaceX and Tesla, doubled down in his response Kelly.

"I strongly disagree. Forcing your pronouns upon others when they didn’t ask, and implicitly ostracizing those who don’t, is neither good nor kind to anyone," Musk wrote, in part.

In an email to NBC News, Kelly said he felt obligated to speak out against Musk because the matter is "personal" to him, adding that he sees "the pain the hate causes" his gay and transgender family members.

"Sometimes people call me Mark, I feel obligated to correct them," he said, referring to his identical twin brother. "If people referred to me as she/her I would feel obligated to correct them as well."

Regarding Dr. Fauci, Kelly said he believes the public health official — who was the head scientist leading the country through most of the Covid-19 pandemic and has become demonized by the GOP — did "what he thought was right to protect lives. "

"As a science minded person I feel obligated to defend science," he added.

A representative for Twitter did not immediately respond to a request for comment.

Sunday's Twitter spat was not the first time Musk, who has a transgender daughter, has commented on LGBTQ issues and drawn criticism, particularly regarding the use of pronouns that do not align with an individual's sex assigned at birth.

In July 2020, the billionaire made his views known about pronoun usage, tweeting: "Pronouns suck." Later that year, he elaborated on his views, writing: “I absolutely support trans, but all these pronouns are an esthetic nightmare.”

For Subscribers

FOR SUBSCRIBERSFood banks overwhelmed by Trump cuts

FOR SUBSCRIBERSInflation and tariffs push U.S. holiday spending projections to a record $1.7 trillion

FOR SUBSCRIBERSWhat happened inside the room where officials tried to execute Christa Pike by lethal injection

FOR SUBSCRIBERSHow we reported the saga of the CIA officer and his gold-bar stash

FOR SUBSCRIBERS‘We’re going to beat you to death with audits’: Brad Raffensperger gears up to oversee his final election in Georgia

FOR SUBSCRIBERSDiddy is punished following NBC News report on his VIP life in prison and contraband cellphone use

FOR SUBSCRIBERS‘Too young to vote, old enough to be tear gassed’: French protesters’ anger swells

FOR SUBSCRIBERSDOJ gets aggressive in suing states that challenge Trump’s immigration policies

FOR SUBSCRIBERSJustice Department seeks criminal charge for former Trump aide Cassidy Hutchinson

FOR SUBSCRIBERS‘I just want to hold him’: USS Lincoln sailor to meet his 10-month-old son as ship docks

FOR SUBSCRIBERSSenate candidates run on raising Social Security taxes for higher incomes to prevent benefit cuts

FOR SUBSCRIBERSRussian operation that used ChatGPT tricked schools, a politician and media, OpenAI says

FOR SUBSCRIBERSTrump administration’s deal with Nevada fuels data center fight in governor’s race

FOR SUBSCRIBERSLatino voters reject Trump’s immigration policies — and detail the personal impact

FOR SUBSCRIBERSAs Democrats eye big midterm gains, the Wisconsin governor’s race remains a nail-biter

Slide 1 of 1

In a since-deleted tweet — and just several days after his high-profile takeover of the social media giant — Musk shared link to an unfounded anti-LGBTQ conspiracy theory about the attack on House Speaker Nancy Pelosi's husband, Paul Pelosi. The conspiracy theory suggested, with no evidence, that Pelosi's assailant was actually a “male nudist hippie prostitute.”

For Subscribers

FOR SUBSCRIBERSFood banks overwhelmed by Trump cuts

FOR SUBSCRIBERSInflation and tariffs push U.S. holiday spending projections to a record $1.7 trillion

FOR SUBSCRIBERSWhat happened inside the room where officials tried to execute Christa Pike by lethal injection

FOR SUBSCRIBERSHow we reported the saga of the CIA officer and his gold-bar stash

FOR SUBSCRIBERS‘We’re going to beat you to death with audits’: Brad Raffensperger gears up to oversee his final election in Georgia

FOR SUBSCRIBERSDiddy is punished following NBC News report on his VIP life in prison and contraband cellphone use

FOR SUBSCRIBERS‘Too young to vote, old enough to be tear gassed’: French protesters’ anger swells

FOR SUBSCRIBERSDOJ gets aggressive in suing states that challenge Trump’s immigration policies

FOR SUBSCRIBERSJustice Department seeks criminal charge for former Trump aide Cassidy Hutchinson

FOR SUBSCRIBERS‘I just want to hold him’: USS Lincoln sailor to meet his 10-month-old son as ship docks

FOR SUBSCRIBERSSenate candidates run on raising Social Security taxes for higher incomes to prevent benefit cuts

FOR SUBSCRIBERSRussian operation that used ChatGPT tricked schools, a politician and media, OpenAI says

FOR SUBSCRIBERSTrump administration’s deal with Nevada fuels data center fight in governor’s race

FOR SUBSCRIBERSLatino voters reject Trump’s immigration policies — and detail the personal impact

FOR SUBSCRIBERSAs Democrats eye big midterm gains, the Wisconsin governor’s race remains a nail-biter

Slide 1 of 1

Musk's controversial tweets on Sunday come amid a seemingly endless stream of headlines the billionaire has generated since he took over Twitter.

Just days after formally taking over the company, he abruptly laid off a significant proportion of his employees, sending shock waves throughout the tech industry.

And in late November, Musk reinstated former President Donald Trump to the site, almost two years after the company banned him citing his role in the Jan. 6 insurrection at the U.S. Capitol. The billionaire CEO also reinstated other previously suspended accounts, including those belonging to conservative firebrand Rep. Marjorie Taylor Greene, R-Ga., and anti-trans pundit Meghan Murphy.

The company also recently announced it is "no longer enforcing the Covid-19 misleading information policy."

While Musk has repeatedly maintained that the company has not altered any of its moderation policies regarding hate speech, the uncertainty over what the platform will look like under his leadership has prompted some of Twitter's advertisers to pull back on purchasing promotional placements on the site.

On Sunday evening, after his spat with Kelly, Musk was met with a mix of boos and applause when he made a surprise appearance during comedian Dave Chappelle’s show in San Francisco. Last year, Chappelle was widely criticized by LGBTQ advocates after the release of a comedy special many considered to be transphobic.