Here’s a look at some notable birthdays being celebrated today:

President Barack Obama

Age: 50

Occupation: Politician

Known For: Currently serving as the 44th President of the United States, being the first African American to hold the office, and his unshakably cool public persona

Jeff Gordon

Age: 40

Occupation: NASCAR Driver

Known For: Winning 84 career races, holding three the Daytona 500 championships, and being the first driver to reach $100 million in career winnings in the Cup series

Helen Thomas

Age: 91

Occupation: Journalist and Author

Known For: More than 50 years as a member of the White House Press Corps, covering every US President from Eisenhower to Obama, being the first female member and president of the White House Correspondents’ Association, and authoring six books

Billy Bob Thornton

Age: 56

Occupation: Actor, Screenwriter, and Musician

Known For: Appearing in dozens of movies, winning an Oscar for Best Adapted Screenplay for the 1996 film ‘Sling Blade,’ and a short-lived marriage to Angelina Jolie

Roger Clemens

Age: 49

Occupation: Retired Professional Baseball Player

Known For: His seven Cy Young Awards, being one of only four pitchers to have more than 4,000 career strikeouts, and his indictments on six felony counts involving perjury, false statements and obstruction of Congress in connection with a steroid scandal