NASA astronaut Christina Koch set a new record for the longest spaceflight by a woman on Saturday, when she broke former NASA astronaut Peggy Whitson’s record of 288 days. 

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It’s a new day. It’s a new dawn.⁣⁣⁣ ⁣⁣⁣ Astronaut Christina Koch (@Astro_Christina) sets a record today, Dec. 28, for the longest single spaceflight by a woman, eclipsing the former record of 288 days set by Peggy Whitson of @nasaastronauts. Her long-duration mission is helping us learn how to keep astronauts healthy for deep space exploration to the Moon and Mars.⁣⁣⁣ ⁣⁣⁣ #CongratsChristina on reaching new heights! Swipe left to see a few photos Christina captured from her vantage point aboard the @iss.⁣⁣⁣ ⁣⁣⁣ #NASA #Space #BreakingRecords #WhoRunTheWorld

A post shared by NASA (@nasa) on Dec 28, 2019 at 8:01am PST

Christina, who is expected to return on February 2020, was originally supposed to be on a six-month mission at the International Space Station. However, as per NDTV, NASA extended her stay partly to collect more data about the effects of long-duration spaceflight.