A scientist published a result on a cosmic science website, claiming to have found evidence that life on Earth came from comets, which has attracted widespread attention  He claims to have found microscopic diatom fossils in a meteorite that fell to Sri Lanka, the stone has a loose, porous structure and is less dense than anything found on Earth
He deduced that it was part of a comet, noting that the microscopic diatom fossils found in the samples were similar to the microscopic organisms in fossils surviving from the age of dinosaurs, thus providing strong evidence for the comet germplasm theory
The scientist is an avid proponent of the comet germ theory and has claimed that SARS and influenza came from comets