What is Cygnus X-1?Group of answer choicesthe first gamma-ray burster to be spotted in other wavelengths as wella millisecond pulsar with three Earth-like planets around itthe leading candidate for an observable black hole binary systemthe strongest x-ray eclipsing binary system in the skyThe brightest star in the constellation Cygnus.

What is the primary focus of XPoSat (X-ray Polarimeter Satellite) mission?2 pointsTo study gravitational waves in deep spaceTo investigate the formation of planetary nebulaeTo analyze the polarization and spectroscopy of X-ray emissionsTo measure the brightness of astronomical X-ray sources

Which solar system object(s) appear to go through the Zodiac constellations?(selected ALL of the answers that are correct)Group of answer choicesStarsPlanetsSunMoon

What are the oldest-known objects in the Milky Way?*1 pointactive galactic nucleidwarf ellipticalsglobular clustersblack holes

At the center of our Galaxy liesGroup of answer choicesa black hole of millions of solar masses.a huge emission nebula.the largest of all globular clusters.a quasar.an intensely bright visible superstar.

Which of the following components has the longest wavelength?*1 pointMicrowavesUltraviolet lightX-raysγ-rays