After a balloon they sent into the stratosphere came back carrying small biological organisms, a team of British scientists are convinced that they have found proof of alien life.
The balloon had organisms on it which the scientists believe could only have originated from space. Professor Milton Wainwright said he was "95 percent convinced" the organisms did not originate from earth.
"By all known information that science has, we know that they must be coming in from space," he said. "There is no known mechanism by which these life forms can achieve that height. As far as we can tell from known physics, they must be incoming."
Professor Wainwright, who works at the University of Sheffield’s Department of Molecular Biology and Biotechnology, added: "The organisms are not usual. If they came from earth, we would expect to see stuff that we find on earth commonly, like pollen. We're very, very confident that these are biological entities originating from space.”
The team thinks that the organisms originated from comets and that the samples made it into the earth's atmosphere during a meteorite shower.
"The particles are very clean," Wainwright said. "They don't have any dust attached to them, which again suggests they're not coming to earth. Similarly, cosmic dust isn't stuck to them, so we think they came from an aquatic environment, and the most obvious aquatic environment in space is a comet. They're very unusual beasts, not your normal kind of life from earth."
Although the organisms are not alive, they probably do contain DNA, The Independent reported.
"If we're right, it means that there's life in space, and it's coming to earth. It means that life on earth probably originated in space," Wainwright said. "Statistically, there's no reason why life should originate on earth. There are billions and billions of comets, but most biologists are stuck on earth. The earth is an open system with biology raining down on it as we speak. It's almost too amazing to believe."