Abstract: X-ray astronomy is a product of the space age. Possible only from viewing platforms above the atmosphere, the first celestial X-ray source other than the Sun was discovered just over sixty ...

Army Spc. Immanuel Gitamo, an Air Defense Battle Management System Operator assigned to 2nd Stryker Brigade Combat Team, 7th Infantry Division on Joint Base Lewis-McChord, Wa., hopes to soon change ...

Home to the world’s largest refracting telescope, the Yerkes Observatory in Wisconsin was so influential that Albert Einstein insisted on visiting. Now you can too. Sometimes called “the birthplace of ...