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India’s ASTROSAT makes rare discovery
Why is it in News?
- India’s ASTROSAT detected an extreme ultraviolet (UV) light from a galaxy which is 9.3 billion light-years away from Earth.
ASTROSAT:
- It is India’s first multi- wavelength satellite observatory.
- It aimed at studying celestial sources in X-ray, optical and UV spectral bands simultaneously.
- Scientific objectives:
(1) To understand high energy processes in binary star systems containing neutron stars and black holes;
(2) Estimate magnetic fields of neutron stars;
(3) Study star birth regions and high energy processes in star systems lying beyond our galaxy;
(4) Detect new briefly bright X-ray sources in the sky;
(5) Perform a limited deep field survey of the Universe in the Ultraviolet region.