Royal Astronomer Professor Lord Martin Rees called Elon Musk's idea to colonize Mars a "dangerous illusion."
At a World Government Summit panel in Dubai, Lord Rees, who has been the astronomer royal since 1995, ridiculed the publicity-seeking billionaire's ambitions.
Musk has long advocated for the colonization of Mars, and a flurry of tweets in November confirmed his desire to pursue it.
On the other hand, leading scientist Lord Rees has thrown a wrench in the works of SpaceX creator Elon Musk, calling the possible colonization a "dangerous illusion" and making David Bowie's song "Life On Mars" a lot less enjoyable.
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