Elon Musk is preparing to reveal further details of his hugely ambitious plan to build a city on the surface of Mars.

Tomorrow, the billionaire's SpaceX is holding an event called "" which will shed light on the Red Planet exploration scheme.

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Ahead of the event, Musk shared images of a new rocket booster called the Raptor, which will power an "Interplanetary Transport System".

His firm has carried out a test-firing of the device, which is designed to propel a spaceship all the way to the Red Planet.

Musk has previously claimed Mars is "a fixer-upper of a planet" and even suggested dropping nuclear bombs on its surface to heat up the atmosphere and make it suitable for human colonisation.

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After successfully testing his reusable rocket for the first time, Musk said: "I think it really quite dramatically improves my confidence that a city on Mars is possible.

"That's what all this is about."

However, his confidence may have been dented when one of his rockets exploded at Cape Canaveral space centre – blowing up Facebook’s £150million internet satellite.

SpaceX was conducting a test firing of its pioneering unmanned rocket when disaster struck.