*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*
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