According to the story, the Doctor, in Doctor Who, never really died - rather, when his body gets severely damaged (in a way that would kill a human), his body regenerates. Of course, that doesn't make him immortal; it is clear that there are things that might really kill him.
yes he does
Maria Doctor is 5' 9".
Doctor Doctor - 1989 The Young and the Hopeless 3-9 was released on: USA: 22 November 1990
Doctor Who The Doctors Revisited - 2013 The Ninth Doctor 1-9 is rated/received certificates of: UK:PG
Yes he was killed in the impossible astronaut
Doctor Clayton died in 1947.
Doctor Greenwood died in 1951.
Doctor Doctor - 1989 Doctors and Other Strangers 2-9 was released on: USA: 15 January 1990
The Tenth Doctor (a.k.a David Tennant) did not die. In fact, he regenerated into the Eleventh Doctor (a.k.a Matt Smith).
The Tenth Doctor dies and regenerates into the Eleventh Doctor
Eventually yes, he will regenerate into the twelfth Doctor.
Doctor Who - 1963 The Sea Devils Episode One 9-9 is rated/received certificates of: Australia:PG