Which observatory/satellite was launched into space first, Hakucho or Chandra X-ray Observatory?
Chandra X-ray Observatory The Chandra X-ray Observatory (CXO), previously known as the Advanced X-ray Astrophysics Facility (AXAF), is a Flagship-class space observatory launched on STS-93 by NASA on July 23, 1999. Chandra is sensitive to X-ray sources 100 times fainter than any previous X-ray telescope, enabled by the high angular resolution of its mirrors. Since the Earth's atmosphere absorbs the vast majority of X-rays, they are not detectable from Earth-based telescopes; therefore space-based telescopes are required to make these observations. Chandra is an Earth satellite in a 64-hour orbit, and its mission is ongoing as of 2017 .
KU Observatory The K.U. Observatory or Karachi University Observatory is located in the campus area of Karachi University. The KU space observatory is operated by the Institute of Space and Planetary Astrophysics and stands majestically atop a hill and surprisingly, was built to last. The space observatory was last built in 1995 as a part of Higher Education Commission of Pakistan. The KU Observatory can resist all seismological challenges as its pillars go 15 feet deep into the ground. The telescope has a motor that keeps pace with the movement of the earth making any object under view always visible without any readjustments.