David Tennant and Billie Piper have signed up for another series of Doctor Who, it was revealed on Thursday.
While speaking about the final episode of series two, called Doomsday, Billie told reporters: "There are lots of places for Rose to go."
David Tennant seemed to be enjoying making the show: "I have had a ball ... I might still be here in 40 years."
They were at the launch of the second series in Cardiff, where the first episode, called New Earth, was shown.
That episode features Rose and the Doctor sharing a kiss, but as you might expect from the top sci-fi show, there's a bit of a twist.
Rose's body has been taken over by Lady Cassandra, the last surviving human from the previous series.
David Tennant spoke about the high quality of the writing in the new series: "Each script that we get is more funny and wilder and more inventive than the last."
Meanwhile, writer Russell T Davies has said he wouldn't rule out a female Doctor.
Speaking at the launch event, he said he would "have the nerve" to give the role to a woman.
The new 13 episode series of Dr Who starts in April.