Showbiz
Rex Features
The popstar has developed a fascination with extra-terrestrials and space while in America and wants to pursue his star-gazing with his own specialist building, claims The Sun.
Williams is apparently a regular visitor to the National Optical Astronomy Observatories in Tuscon.
"Some of Robbie's acquaintances in LA have been having a chuckle at his expense," said a source.
"He is leading a bizarre existence at the moment - vanishing into the desert to look at stars in far-flung galaxies.
"He is dead set on buying himself his own observatory in the desert. He is hooked on all things from outer space."
More: Robbie Williams, Showbiz
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