Pulsar RX J0720.4-3125 captured by XMM-Newton. Image credit: ESA/MPE. Click to enlarge ESA’s orbiting X-ray telescope, the XMM-Newton space observatory, has located a neutron star that’s out of control. Researchers found that its temperature rose steadily for more than four years, but now it’s starting to decrease again. The object’s overall temperature isn’t changing, it’s … Continue reading "Tumbling Neutron Star"