Nearly every U.S. president since Nixon has called astronauts in space. Today @POTUS continues the tradition:

https://t.co/jzAeRnaaUo pic.twitter.com/tOd69zLR1q — NASA History Office (@NASAhistory) April 24, 2017

President Donald Trump and NASA astronaut Kate Rubins will be calling the ISS today at 10 AM ET to congratulate Whitson -- NASA is offering a livestream of the event which you can watch below. It'll also be broadcast on NASA's Facebook and YouTube pages; you can find all the details on the stream here.

NASA's excellent Tumblr also has details on four other times Whitson made history. She was named the first NASA Science Officer aboard the ISS way back in 2002 and was the first female to command the ISS in 2008. She was also the first female to become Chief of the Astronaut Office, the most senior position for active astronauts. And, as previously mentioned, she also just recently broke the record for most spacewalks for a female. Her 53+ hours and eight spacewalks are both records.