51. How many kms is an Astronomical Unit (AU) in terrestrial measurements?
149597870700 metres or about 150 million kilometres (93 million miles)
52. In which book, Nicholas Copernicus, wrote that the Sun is the centre of Universe, that marked the beginning of modern astronomy?
De Revolution Orbium Coelestium
53. Who wrote ancient cosmological treatise Almagest?
Ptolemy
54. Which Greek astronomer of 150 BC compiled a catalogue of the position of more than 800 stars besides establishing a magnitude scale to measure star brightness, that is still in use?
Hipparchus
55. What is Big Bang Theory?
56. The science which deals with the nature and origin of the universe is known as?
Cosmology
57. Founder of Scientific Astronomy?
Hoffmann
58. A congregation of millions or billions of stars held together by gravity?
Galaxy
59. How many different kinds of galaxies are there?
60. Which American astronomer classified the galaxies into spiral elliptical and irregular types?
Edwin Hubble
61. Our galaxy milky way is a?
Spiral Galaxy
62. Which galaxy is called as the twin of our galaxy, the milky way?
M-31
63. Group of stars that form certain shapes or pattern are called?
Constellations
64. The pole star is a part of the ........ constellation?
Ursa Minor
65. Where is Lyra?
Lyra is a summer constellation.
66. The biggest constellation is?
Hydra
67. Which constellation is known as Hunter?
Orion
68. Father of modern space science?
Galileo Galilei
69. Oldest of all the constellations?
Leo
70. Which constellation is called by the name Milk- clipper?
Saggitarius
71. Where is Taurus?
Taurus extends from the celestial equator north to a little above 30° north declination.
72. The two nearest galaxies to our milky way?
Large Magellanic cloud and small Magellanic cloud
73. The galaxy nearer to our galaxy milky way?
Andromeda Galaxy
74. Milkyway belongs to a cluster of some 24 galaxies called?
Local group
75. Energy is transferred from the Sun to Earth mainly by?