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NASA's Christina Koch during a spacewalk on Friday. Photo: NASA TV

NASA astronauts Jessica Meir and Christina Koch stepped into the vacuum of space for a history-making spacewalk outside of the International Space Station on Friday.

Why it matters: While American women have been flying in space since Sally Ride made her first trip to orbit in 1983, today's spacewalk marks the first all-female spacewalk in history.

Details: Koch and Meir were expected to go for their first spacewalk on Oct. 21, but a power issue on the station forced mission managers to plan Friday's walk first, delaying the Monday spacewalk and others in the series.

  • The two astronauts will change out a battery charging unit that collects energy from the station's solar arrays, NASA said in a statement, adding that the unit's failure presents no harm to the orbiting outpost or its astronauts.
  • This is Koch's fourth spacewalk and Meir's first, and it is expected to take 5 to 6 hours.
  • The two women are self-proclaimed "best friends."

Between the lines: While women made up half of Meir and Koch's 2013 astronaut class, women comprise about 34% of NASA's workforce as a whole, and 23% of the agency's science and engineering employees, according to agency statistics.

Go deeper:

Go deeper

Dan Primack, author of Pro Rata
1 hour ago - Technology

TikTok gets more time (again)

Illustration: Aïda Amer/Axios

The White House is again giving TikTok's Chinese parent company more to satisfy national security concerns, rather than initiating legal action, a source familiar with the situation tells Axios.

The state of play: China's ByteDance had until Friday to resolve issues raised by the Committee on Foreign Investment in the U.S. (CFIUS), which is chaired by Treasury secretary Steve Mnuchin. This was the company's third deadline, with CFIUS having provided two earlier extensions.

Federal judge orders Trump administration to restore DACA

DACA recipients and their supporters rally outside the U.S. Supreme Court on June 18. Photo: Drew Angerer via Getty

A federal judge on Friday ordered the Trump administration to fully restore the Deferred Action for Childhood Arrivals program, giving undocumented immigrants who arrived in the U.S. as children a chance to petition for protection from deportation.

Why it matters: DACA was implemented under former President Obama, but President Trump has sought to undo the program since taking office. Friday’s ruling will require Department of Homeland Security officers to begin accepting applications starting Monday and guarantee that work permits are valid for two years.

Updated 3 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Politics: Fauci says he accepted Biden's offer to be chief medical adviser "on the spot" — The recovery needs rocket fuel.
  2. Health: CDC: It's time for "universal face mask use" — Death rates rising across the country — Study: Increased testing can reduce transmission.
  3. Economy: U.S. economy adds 245,000 jobs in November as recovery slows — America's hidden depression: K-shaped recovery threatens Biden administration.
  4. Cities: Bay Area counties to enact stay-at-home order ahead of state mandate
  5. Vaccine: What vaccine trials still need to do.
  6. World: UN warns "2021 is literally going to be catastrophic"
  7. 🎧 Podcast: Former FDA chief Rob Califf on the vaccine approval process.