China’s new radio telescope, the largest in the world—and the latest marker of Beijing's ambition to become a global player in science—began its search for signals from distant galaxies on Sunday. Photo: Zuma Press Subscribe to the WSJ channel here: http://bit.ly/14Q81Xy More from the Wall ...

With increasing regularity, Earth's oceans are the drop zones for incoming leftovers from space. For decades, Russian Progress resupply spacecraft loaded with tons of waste from the International Space Station (ISS) have been intentionally steered to reentries over the Pacific Ocean’s ...