"The alien that crashes to Earth during the supposed Roswell crash in Bowie birth year is also the starchild that evolves at the end of 2001 . Astronaut Bowman is in cryogenic suspension for 18 months and then evolves into .... something else. It is curious to note that Bowie was Ziggy Stardust for 18 months and then became .... something else. Elvis recorded at Sun Studio and was under the guidance of Sam Phillips for 18 months and then became ... something else."
link: Bowie vs Elvis.