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For decades, astronomers have been trying to find dark matter – what exactly is invisible matter is thought to make up the bulk of the universe. A new study, using data from the US Aerospace Agency’s (NASA) Fermi space telescope may ultimately provide some answers. Solve the 9 greatest mysteries of science in the 21st century. You know it’s me cathy face mask. Professor of physics and science Harry Nelson, from the University of California (USA) has discovered a kind of particle that is thought to form dark matter, is emitting from the Sun to Earth.