Since 2013, Dr Milton Wainwright has been trying to convince the scientific community that he has found aliens in Earth's stratosphere.
Now the controversial British professor claims he has new evidence of these 'extra-terrestrial organisms' floating 25 miles (40km) above the planet.
He says the organisms test positive for DNA, and have masses that are 'six times bigger than the size limit of a particle which can be elevated from Earth to this height.'
The organisms, he claims, are contained in a microscopic metal globe designed by an intelligent species to 'seed' alien life on Earth.