50 Score: 0 Attempted: 0/50 Subscribe 1. What does comparative planetology study? (A) Life on Earth only (B) Comparison of planets and moons in the solar system (C) The Sun’s internal structure (D) Black holes 2. Which two planets are often called “twin planets” because of their similar size and mass? (A) Earth and Mars … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Which process powers the main sequence stars? (A) Nuclear fission (B) Nuclear fusion of hydrogen (C) Radioactive decay (D) Gravitational collapse 2. What is the final fate of a star with mass less than 8 solar masses? (A) Black hole (B) Neutron star (C) White dwarf (D) Supernova … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. What are neutrinos primarily produced by in astrophysical sources? (A) Nuclear reactors (B) Cosmic rays interactions (C) Black holes (D) Pulsars 2. Which type of neutrino was first detected experimentally? (A) Electron neutrino (B) Muon neutrino (C) Tau neutrino (D) Sterile neutrino 3. The first detection of solar … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. What is the primary source of high-energy photons in the universe? (A) Stars (B) Supernovae (C) Black holes and neutron stars (D) Planets 2. X-ray astronomy mainly studies which cosmic objects? (A) Planets (B) Cold molecular clouds (C) Hot and compact objects (D) Globular clusters 3. The Crab … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Gravitational waves were first directly detected in which year? (A) 2014 (B) 2015 (C) 2016 (D) 2017 2. The first direct detection of gravitational waves was announced by: (A) LISA (B) LIGO (C) Virgo (D) Einstein Telescope 3. Who first predicted the existence of gravitational waves? (A) Isaac … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Which component dominates the mass of galaxies? (A) Gas (B) Stars (C) Dark matter (D) Dust 2. What type of galaxy is the Milky Way classified as? (A) Elliptical (B) Irregular (C) Barred spiral (D) Lenticular 3. Which galaxy is on a collision course with the Milky Way? … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Who first discovered that galaxies are moving away from us, leading to the concept of an expanding universe? (A) Edwin Hubble (B) Albert Einstein (C) Vesto Slipher (D) Georges Lemaître 2. What is the primary evidence for the expansion of the universe? (A) Cosmic microwave background (B) Galaxy … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Who first proposed the General Theory of Relativity, the foundation of modern cosmology? (A) Newton (B) Hubble (C) Einstein (D) Friedmann 2. Who discovered the expansion of the universe? (A) Hubble (B) Kepler (C) Copernicus (D) Planck 3. The Cosmic Microwave Background (CMB) is the remnant radiation from: … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Stellar dynamics is primarily concerned with the study of? (A) Nuclear fusion in stars (B) Motion of stars under mutual gravity (C) Planetary orbits (D) Chemical composition of stars 2. The Virial Theorem relates? (A) Kinetic and potential energy in a gravitational system (B) Temperature and luminosity of … Read more
50 Score: 0 Attempted: 0/50 Subscribe 1. Ultraviolet astronomy studies which type of radiation? (A) Infrared (B) Ultraviolet (C) X-rays (D) Radio waves 2. Ultraviolet (UV) radiation has wavelengths shorter than: (A) Visible light (B) Infrared light (C) X-rays (D) Radio waves 3. The wavelength range of ultraviolet astronomy is approximately: (A) 10–400 nm (B) … Read more