Since its launch on July 23, 1999, the Chandra
X-ray Observatory has been NASA’s flagship
mission for X-ray astronomy, taking its place in
the fleet of “Great Observatories.”
NASA’s Chandra X-ray Observatory is a telescope specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes. Because X-rays are absorbed by Earth’s atmosphere, Chandra must orbit above it, up to an altitude of 139,000 km (86,500 mi) in space. The Smithsonian’s Astrophysical Observatory in Cambridge, MA, hosts the Chandra X-ray Center which operates the satellite, processes the data, and distributes it to scientists around the world for analysis. The Center maintains an extensive public web site about the science results and an education program.
Author: Vineeta Tawney
In India, we have the Indian Space Research Organization (ISRO), the space agency for space science research and planetary exploration.
Indian space program encompasses research in areas like:
- Earth sciences
- Atmospheric sciences
- Theoretical physics
Balloons, sounding rockets, space platforms, and ground-based facilities support these research efforts. A series of sounding rockets are available for atmospheric experiments. Several scientific instruments have tested on satellites especially to direct celestial X-ray and gamma-ray bursts. 2
In space science India has completed the below projects successfully:
- India’s first satellite was launched “Aryabhata” on 19 April 1975.
- “Rohini” in 1980, it became the first satellite to be placed in orbit by an Indian-made launch vehicle, “SLV-3″
- “Polar Satellite Launch Vehicle” (PSLV) for launching satellites into polar orbits
- “Geosynchronous Satellite Launch Vehicle” (GSLV) for placing satellites into geostationary orbits
- Satellite navigation systems such as GAGAN and IRNSS have been deployed
- In January 2014 the ISRO used the cryogenic engine in a GSLV-D5 launch of the GSAT-14