Each day around 10:20 am and 2:20 pm we step into a time machine and take a look back. Who was born? What was going on in the world? What happened in music?

Today on May 15th...

In 1969-Emmitt Smith was born. He's an NFL Hall of Famer and All-Time NFL rusher. He turns 50 today.

In 2010-Australian Jessica Watson became the youngest person to sail, non-stop and unassisted around the world. She was just 16 years old at the time.

Getty Images

In 1992-In music history, TLC's "Ain't 2 Proud 2 Beg" was certified platinum.

Jason Kempin, Getty Images

And that's what happened today in history.