EVOLUTION OF UNIVERSE

UNIVERSE

*The study of universe is known as
Ans : Cosmology
*The universe comprises of billions of
Ans : Galaxies
*The galaxies are made up of millions of
Ans : Stars
*Father of modern Astronomy
Ans : Copernicus
*The astronomer known as the Law Giver of Heavens
Ans : Kepler
*Light year and parsec are the units of measuring distances in the
Ans : Universe
*The distance travelled by light in one year is called
Ans : One light year
*One light year = 9.46 x 1012 kilometers
*An astronomical unit of distance
Ans : Parsec
*One parsec = 3.26 light year
*Scientist who found universe is expanding, in 1929
Ans : Sir Edwin Hubble
*Geocentric theory was propounded (the Earth was the centre of universe) by
Ans : Ptolemy
*Heliocentric theory was propounded (the Sun is the centre of the universe) by
Ans : Copernicus
*Laws of Planetary motion was discovered by
Ans : Kepler
*Study of celestial bodies and universe
Ans : Astronomy
*Study of the structure of the universe
Ans : Cosmology
*Study of the origin of universe
Ans : Cosmogony
*Study of life in outer space
Ans : Exobiology
*Study of moon
Ans : Selenology
*Study of Space Craft
Ans : Astronautics
*Study of Sun
Ans : Heliology
*International Astronomical year was observed by UNO in
Ans : 2009
*Father of Indian astronomy
Ans : Aryabhattan
*Father of Scientific astronomy
Ans : Kepler
*Father of modern Indian astronomy
Ans : M.K.Vainu Bappu
*Farther of Indian Space Programme
Ans : Vikram Sarabhai

 EVOLUTION OF UNIVERSE
*There are three main theories put forward to explain origin and evolution of universe.

1.BIG BANG THEORY
*Most widely accepted theory regarding the origin of universe
Ans : Big Bang Theory
*Big Bang Theory was proposed by
Ans : George Lemaitre
*Big Bang Theory was modified by
Ans : Edwin Hubble
*The term big bang was coined by
Ans : Fred Hoyle
*Big bang theory is also called as
Ans : Expanding Universe Hypothesis

2. STEADY STATE THEORY
*Steady State Theory was proposed by
Ans : Hermann Bondi, Thomas Gold and Fred Hoyle
*Steady State Theory was proposed in
Ans : 1948
*Quasi Steady State Theory was proposed by
Ans : Jayant Narlikar

3.THE PULSATING THEORY
The Pulsating Theory was proposed by
Ans : Dr. Allan Sandage
*The theory which proposed that at present universe is expanding
Ans : Pulsating Theory

GALAXIES
*A galaxy is a vast collection of billions of stars, dust, gas and empty space held together by
Ans : Gravitational force
*The word galaxy was first introduced by
Ans : William Herschel
*First person to calculate distance between galaxies
Ans : Sir Edwin Hubble
*There are about 5Q billion galaxies exist in the universe
*Group of galaxies is known as
Ans : Cluster
*The most distant object visible to naked eye in the universe
Ans : Andromeda Galaxy
*Our sun and its planets belongs to the
Ans : Milky Way Galaxy or Akash Ganga
*First astronomer to demonstrate the existence of galaxies beyond milky way
Ans : Edwin Hubble (1924)

TYPES OF GALAXIES
1.Spiral Galaxies
2.Elliptical Galaxies
3.Irregular Galaxies
*The galaxy having central nucleus with great spiral arms
Ans : Spiral Galaxy
*Milky way and Andromeda are the examples of
Ans : Spiral Galaxies
*New stars are formed in Spiral Galaxies Largest spiral galaxy
Ans : Andromeda Galaxy
*The farthest object which can be seen with naked eyes
Ans : Andromeda Galaxy
*The milky way belongs to a cluster of galaxies called
Ans : Local group
*The galaxies having no spiral arms are called
Ans : Elliptical,Galaxies
*Red Giants and white dwarfs are seen in the
Ans : Elliptical Galaxies
*Dim collection of old stars are seen in the
Ans : Elliptical Galaxies
*Galaxies having no regular shape
Ans : Irregular Galaxies
*Large Magellanic cloud is an
Ans : Irregular Galax