Wait, so Penny wasn't the original friendly neighbor in The Big Bang Theory? Here's how different the dynamic would have been if they'd kept the OG female lead.

Jim Parsons stunned Hollywood by rejecting a $50 million deal to end The Big Bang Theory. Discover why he chose peace over paychecks.

The Big Bang Theory leaves its fair share of plot threads dangling, but this one is more emotional than all the others combined.

When The Big Bang Theory first introduced Leonard Hofstadter and Penny, few could have predicted that their unlikely relationship would become one of the series' greatest things.

10 Best Big Bang Theory Guest Stars Ranked These iconic guest stars left their mark on the hit series in unforgettable ways.

Penny (Source: CBS) Penny is portrayed by Kaley Cuoco in the fan-favorite CBS sitcom, The Big Bang Theory. Kaley Christine Cuoco, born November 30, 1985 (38 years old) in Camarillo, California, is an ...

The Big Bang Theory's best episodes feature amazing jokes or great character moments. But what are some of the series best examples of this?

Early galaxy formation The surprising findings from JWST of bright galaxies at high redshifts, or distances, could imply that these galaxies matured faster than expected after the Big Bang.