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Mike Hopkins aboard the International Space Station. Photo: NASA

NASA astronaut Mike Hopkins was sworn in as the newest member of the U.S. Space Force Friday from his post onboard the International Space Station.

Why it matters: Hopkins is the first NASA astronaut to serve in the Space Force.

  • "Today, you will be the first... Space Force astronaut, that will be living space," General John Raymond, the Space Force's Chief of Space Operations said to Hopkins during the swearing in.

The big picture: NASA and the U.S. military have had a close relationship since the earliest days of the space agency.

  • Some of the first astronauts were test pilots from the military, and today, the majority of astronauts that have served NASA were military service members.
  • "The very first astronaut was Alan Shepard from the Navy and the first airman in space was Gus Grissom. The first marine in space was John Glenn, and the first army officer... in space astronaut was Robert Stewart," Raymond said.

Between the lines: When the announcement of Hopkins' swearing in was made earlier this year, some space watchers questioned whether it would muddy the waters with the public's understanding of what the Space Force does.

  • The point of the Space Force is not necessarily to send people to space but to protect essential hardware — like spy and GPS satellites — from potential bad actors.
  • "The skill sets that you need to be an astronaut is totally different than the skill set you need to be a space operator in the Space Force," Todd Harrison, an analyst at the Center for Strategic and International Studies, told Axios in November.
  • Hopkins' swearing in aboard the space station also raised eyebrows. The space station is considered a tool of diplomacy and peace, not warfighting, and some experts are concerned the transfer aboard the station may send mixed signals to international partners.

Go deeper: The Space Force heads to space

Go deeper

Jan 29, 2021 - Podcasts

When investing goes viral

You've likely heard the headlines this week about the stock market mania around GameStop. But this isn't just about the stock market. It's a kind of populist uprising borne of the Internet.

  • Plus, what’s behind GM’s big electric vehicle announcement.
  • And, the new Wild West is in outer space.

America's child care sticker shock

Illustration: Sarah Grillo/Axios

Parents looking to return to the job market may find child care options have gotten pricier — and that's if they can enroll their kids at all.

Why it matters: The fate of the recovery partially relies on the return of parents who left the workforce to care for their children.

Biden's major border shake-up

A migrant family waits to be taken to a Border Patrol processing facility after crossing the Rio Grande River. Photo: Brandon Bell/Getty Images

Vice President Kamala Harris' trip to the border on Friday will play out amid the Biden administration widening shake-up of U.S. border policy and leadership.

Driving the news: Rep. Henry Cuellar (D-Tex.) tells Axios that he's been advised by a border official that as soon as mid-July the Biden administration will end all use of Title 42, a Trump-era policy citing coronavirus as rationale to block migrants at the border.