He says there is evidence for two nuclear explosions on Mars
Detection of uranium and thorium on the surface is evidence for these past explosions, he claims
And he warns we should be wary of a similar attack on Earth
In his bizarre theory, Dr Brandenburg says ancient Martians known as Cydonians and Utopians were massacred in the attack - and evidence of the genocide can still be seen today.
Back in 2011 the scientist first postulated that the red colour on Mars could have been due to a naturally occurring thermonuclear explosion.
'The Martian surface is covered with a thin layer of radioactive substances including uranium, thorium and radioactive potassium - and this pattern radiates from a hot spot on Mars,' he told Fox News at the time.
'A nuclear explosion could have sent debris all around the planet.'
But since then he has advanced his theory to the level that he now no longer thinks it was a naturally occurring explosion - but rather one planned by an intelligent alien race.
According to Vice, the conclusion of his latest paper says that nuclear isotopes in the atmosphere resembling hydrogen bomb tests 'may present an example of civilisation wiped out by a nuclear attack from space.'
His research centres around the 'high concentration' of Xenon-129 in the Martian atmosphere, and uranium and thorium on the surface, spotted by Nasa's Mars Odyssey spacecraft.
Scientists have previously pointed about that the appearance of these elements is not surprising, as they are natural elements found everywhere.
But Dr Brandenburg is adamant they are the remnants of two nuclear explosions on the surface.
He will lay out his research tomorrow in his talk titled 'Evidence of Massive Thermonuclear Explosions in Mars Past, The Cydonian Hypothesis, and Fermi's Paradox'.
And he is also apparently set to have a paper published in the Journal of Cosmology and Astroparticle Physics.
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Ancient Martian civilisation was wiped out by nuclear bomb-wielding aliens - and they could attack Earth next, claims physicist | Daily Mail Online