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With reference to 'Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct? 1. Other than USA and Russia, India is the only country to have launched a similar observatory into space. 2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth. Select the correct answer using the code given below.

With reference to 'Astrosat', the astronomical observatory launched by India, which of the following statements is/are correct? 1. Other than USA and Russia, India is the only country to have launched a similar observatory into space. 2. Astrosat is a 2000 kg satellite placed in an orbit at 1650 km above the surface of the Earth. Select the correct answer using the code given below. Correct Answer Neither 1 nor 2

The correct answer is Neither 1 nor 2.

  • Astrosat is India’s first dedicated multi-wavelength space observatory.
  • The unique feature of ASTROSAT mission is that enables the simultaneous multi-wavelength observations of various astronomical objects with a single satellite.4
  • ASTROSAT with a lift-off mass of about 1513 kg was launched into a 650 km orbit by the PSLV-C30. Hence statement 2 is incorrect.
  • Before India, NASA, space agencies of the European Union, Japan, and Russia are the other countries that have launched similar facilities into space. Hence statement 1 is incorrect.
  • The scientific objectives of the ASTROSAT mission are:
    • To understand high energy processes in binary star systems containing neutron stars and black holes
    • Estimate magnetic fields of neutron stars
    • Study star birth regions and high energy processes in star systems lying beyond our galaxy
    • Detect new briefly bright X-ray sources in the sky
    • Perform a limited deep field survey of the Universe in the Ultraviolet region
 

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