Astronomers have detected a massive, lonely world drifting through the darkness without a star to call home. This Saturn-sized rogue planet was discovered by an international team of scientists using the gravitational microlensing technique. Free-floating planet gravitationally microlensing a distant star in the Galactic center. (Credit:

China has completed construction of the world’s most powerful hypergravity machine, a device designed to compress space and time to simulate extreme events like dam and earthquake disasters. The machine, officially known as CHIEF1900, was delivered to Zhejiang University on December 22. Built by the Shanghai Electric Nuclear Power Group,