Lost Silk Road cities mapped using remote sensing
Four space station crew members head for Friday return to Earth
Mission to study the ‘dark side’ of the universe just revealed the first piece of unprecedented map
Cuba keeps schools closed, workers home during recovery from power failure, hurricane
After weeks of weather delays, NASA astronauts finally set to depart space station
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Scientists document lost mountain cities on Silk Road in Uzbekistan
Boeing-made satellite explodes in space after experiencing "anomaly"
