Aliens will have been replaced by super-advanced robots and the human race is next, according to astronomer royal Lord Ludlow.
Lord Martin Rees of Ludlow is the astronomer royal, an astrophysicist who supports the royal family, and recently he spoke at the Cheltenham Science Festival.
There he told the congregation that 'flesh and blood' aliens will likely already have been taken over by incredibly intelligent robots, but that's not all.
