A unique “double asteroid” was photographed by a powerful telescope as it whizzed by Earth last month at over 43,000 mph. The asteroid, classified as 1999 KW4, is made up of two components — a larger body orbited by a smaller one separated by about 1.6 miles. It got as close as 3.2 million miles to Earth on May 25 — about 14 times the distance from Earth to the Moon, the European Southern Observatory (ESO) said in a news release Monday. The double asteroid, which has an orbit well known to scientists, is not an impact threat to Earth,...