Another clue about the whereabouts of the missing matter in the Universe has just emerged from amid the largest local cosmic ...

A potential solution to the decades-long “missing matter” problem has been uncovered in astronomers' recent analysis of X-ray ...

On June 19, 1963, two Soviet spacecraft named Vostok 5 and Vostok 6 returned to Earth, ending a historic joint mission. — The Vostok Program: The Soviet's first crewed spaceflight program ...

This book deals with the fundamentals of wave optics, polarization, interference, diffraction, imaging, and the origin, properties, and optical effects of turbulence in the Earth's atmosphere.