People in Moscow were almost “knocked out” by the grotesque smell of rotten eggs and gas that hung over the Russian capital for several hours on Monday. The Emergencies Ministry confirmed that the source of the smell was a leak from a sulfur dioxide processing facility at an oil refinery in Moscow. The city’s ecology watchdog and the Emergencies Ministry said that the level of hydrogen sulfide... 

Artists impression of gas cloud G2 falling onto Sag A* As gas cloud G2 speeds towards Sagittarius A*, a supermassive black hole at our galaxy’s center, astronomers are getting ready to have some of their questions answered. At least the devouring, expected in March-April, promises to be a spectacular view. As Sagittarius A* is located almost 26,000 light years away from the Earth, the collision itself...