Howard and Bernadette are parents!

The Big Bang Theory couple welcomed their first baby during the CBS sitcom’s new episode on Thursday, Dec. 15. And, of course, Mr. and Mrs. Wolowitz gave their little girl the most adorable science-themed name!

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Melissa and Simon as Bernadette and Howard on Big Bang.

Bernadette and Howard — played by Melissa Rauch and Simon Helberg, respectively — named their daughter Halley Wolowitz, after Halley’s Comet. Too cute!

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We can’t wait to see more of Bernadette, Howard and Halley when The Big Bang Theory returns to CBS on Thursday, Jan. 5 at 8 p.m. ET.