This image released by the European Southern Observatory on Aug. 10, 2017 shows near Earth asteroid 2012 TC4, the dot at center. The image was made from a composite of 37 individual 50-second exposures, and the background stars and galaxies appear as bright trails. NASA is using the asteroid’s close flyby to test Earth’s warning network for incoming space rocks. The asteroid will pass within about 27,000 miles (43,000 kilometers) of Antarctica early Thursday, Oct. 11, 2017. (Olivier Hainaut (ESO), Marco Micheli (ESA), Detlef Koschny (ESA)/ESO/ESA NEOCC via AP)
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