2019
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Italy
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Russia
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France
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China
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Detailed explanation-1: -Spektr-RG (Russian: -, Spectrum + Röntgen + Gamma; also called Spectrum-X-Gamma, SRG, SXG) is a Russian–German high-energy astrophysics space observatory which was launched on 13 July 2019.
Detailed explanation-2: -Spektr-R’s closest point (perigee) would be 500 kilometres (310 mi) above the Earth’s surface, with its apogee 340,000 kilometres (210,000 mi) away. The operational orbit would last at least nine years, with the RadioAstron never being in the Earth’s shadow for more than two hours.
Detailed explanation-3: -The telescope, called eROSITA and mounted on the Russian Spektr-RG spacecraft, scans the sky for sources of X-ray radiation (black holes and neutron stars) and works in tandem with Russia’s ART-X instrument that searches for supermassive black holes.
Detailed explanation-4: -Hubble Space Telescope Facts NASA named the world’s first space-based optical telescope after American astronomer Edwin P. Hubble (1889 – 1953). Dr. Hubble confirmed an “expanding” universe, which provided the foundation for the big-bang theory.
Detailed explanation-5: -On Sept. 27, 2011, the Spektr-R telescope started scientific observations capturing its “first light” from the brightest natural radio source in the sky known as Cassiopeia A, an ancient exploded star.