Sam Worthington and Lara Bingle, who welcomed a son last week in L.A., have named him Rocket Zot. Credit: Jason LaVeris/FilmMagic

The littlest Worthington has one pretty cool — and intergalactic — moniker. Welcoming their first child, a baby boy, last week in Los Angeles, Avatar star Sam Worthington and his model wife Lara Bingle named their son Rocket Zot, Page Six confirms.

Since Rocket's birth, Worthington, 38, and Bingle, 27, have been entertaining visitors anxious to meet their new little guy. "Their families came in and they've been staying at his place," a source told Us Weekly March 27. "Sam couldn't be happier."

Largely keeping their pregnancy a secret, the couple began dating in September 2013 and married in an equally secret ceremony, said to be in the Maldives late last year.

"They're inseparable," an insider explained of the pair. "They've been making steps in their relationship but he's an extremely private guy."