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 "Making Humans An Interplanetary Species" which will shed light on the Red Planet exploration scheme.

1 Credit: Getty Images

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.

SpaceX propulsion just achieved first firing of the Raptor interplanetary transport engine pic.twitter.com/vRleyJvBkx — Elon Musk (@elonmusk) September 26, 2016

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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.