James Marsters takes off for ITV's 'Moonshot'

In negotiations to play Buzz Aldrin

James Marsters is heading to the moon.

The actor is in final negotiations to play astronaut Buzz Aldrin in "Moonshot" for Britain's ITV.

The 90-minute telefilm tells the story of the July 20, 1969, Apollo 11 moon landing, beginning 11 days before the launch, and follows Aldrin and fellow astronauts Neil Armstrong and Michael Collins. ITV plans to air the movie in the U.K. in July 2009 to coincide with the 40th anniversary of the mission.

Principal photography is set to begin June 3 in Lithuania.

The series was commissioned by ITV popular factual head Jo Clinton-Davies and produced by Dangerous Films, the creator of "Inside the Twin Towers." The estimated $5 million telefilm is being co-produced with a number of partners including the History Channel, ProSieben, TG1 and NTV Japan.

Marsters is best known for his role as Spike on the series "Buffy the Vampire Slayer." He recently completed filming "Dragonball," Fox's live-action adaptation of the manga franchise. Marsters also has had recurring roles on "Smallville" and the BBC America series "Torchwood."

Marsters is repped by Himber Entertainment, the Kohner Agency and, in the U.K., Amanda Howard & Associates.

Leslie Simmons reported from Los Angeles; Mimi Turner reported from London.