Katherine Johnson, real-life subject of 'Hidden Figures' receives standing ovation at Oscars

Katherine Johnson took the stage with the stars of "Hidden Figures."

Johnson, portrayed in the movie by Taraji P. Henson, worked for NASA as a research mathematician for more than 30 years, according to NASA's website. Appearing at the Dolby Theatre, Johnson, now 98 years old, thanked the crowd for their support.

"I was just excited to have challenging work to do and smart people to work with," she said.

Johnson has said she approves of her portrayal in the film.

"Go see 'Hidden Figures,' and take a young person," she told the Los Angeles Times last month when asked how to get more women and people of color involved in STEM careers. "It will give a more positive outlook on what is possible if you work hard, do your best and are prepared."