It's been half a day since "Supergirl's" pilot debuted on CBS and the new superhero is still soaring. The Hollywood Reporter has learned that the highly-anticipated and much-promoted premiere episode of "Supergirl" was a big success for the network in the ratings.

The debut episode, which followed "The Big Bang Theory," was viewed by 12.9 million people (per Nielsen Media's same day metrics) and averaged a 3.2 rating among adults 18-49. The episode's rating edges out NBC's "Blindspot," which previously held the record for the most-watched new series debut of the 2015-2016 season. "Blindspot" had a 3.1 rating in the 18-49 demo.

As THR points out, it's likely that "Supergirl's" numbers will grow even more when the numbers for those watching on DVR and streaming services are taken into account.

"Supergirl" also had a solid lead-in this week in "The Big Bang Theory," which aired its final Monday night episode before returning to Thursday night; that episode was watched by 15.9 million viewers. Next week, "Supergirl" moves into its new 8 PM time slot where it will lead off CBS' Monday night lineup.

"Supergirl" airs on Mondays at 8 PM ET on CBS.