Showbiz
Rex Features
The popstar will attend New York's Goddard Institute of Space Studies to discuss a recent photo of a human-looking shape taken by NASA's Mars Explorer Spirit, according to the Daily Star.
The former boyband star is quoted as saying: "I've been dreaming about aliens every night. I can't wait to go to sleep because those dreams have been so brilliant.
"They are definitely on their way, seriously. Mark my words. From now until 2012 - watch out kids."
Williams's friend David Icke is also reportedly keen to help with the project.
A source said: "Robbie and David are convinced the Mars picture is genuine and have enough money to help NASA prove it."
More: Robbie Williams, Showbiz
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