Explanation:

Recently, National Aeronautics and Space Administration (NASA) launched a new mission named Imaging X-ray Polarimetry Explorer (IXPE).

• The IXPE observatory is a joint effort of NASA and the Italian Space Agency.
• It will study “the most extreme and mysterious objects in the universe – supernova remnants, supermassive black holes, and dozens of other high-energy objects.”
• Its primary length is two years and the observatory will be at 600 kilometers altitude, orbiting around Earth’s equator.
• It is expected to study about 40 celestial objects in its first year in space.
• It will complement other X-ray telescopes such as the Chandra X-ray Observatory and the European Space Agency’s X-ray observatory, XMM-Newton.

Hence only statement 1st is correct.