Scientists may have picked up a dark matter signal

Dark matter remains one of the most mysterious elements of the universe, because it’s completely invisible to us. It neither emits nor absorbs light, so we can’t observe it directly. A team of researchers believe that they’ve come across important data that could change that, though: data that could lead to equipment being built especially to observe dark matter. While studying the X-ray data collected by the European Space Agency’s XMM-Newton spacecraft, the team came across a spike they couldn’t identify.