What Are Constellations?
- A group of stars that appears to form a pattern or picture
- Small chunks of ice and rock come from the outer edge of the solar system
- Collection of billions of stars
- Small irregularly shaped rocks made up of metal or minerals
A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline.
In case a State emergency is declared, it needs Parliamentary approval after every _____.
- 6 months
- 1 year
- 2 years
- 3 years
State emergency is imposed for an initial period of six months and can last for a maximum period of three years with repeated parliamentary approval every six months.
Big bang theory was proposed by
- Georges Lemaitre
- Hermann Bondi
- Thomas Gold
- Hoyle
Georges Lemaitre was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
Why does a star produce its own light and heat?
- Nuclear fission
- Nuclear fusion
- Chemical reaction
- None
Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
What is the pulsating theory of the universe?
- A cosmological model that combines both the Big Bang and the Big Crunch as part of a cyclical event
- An expansion and contraction of the star as a whole in a regular periodic pulsation
- All the matter of the universe was present in a single place in the form of hot and dense fireball
- Counting of the galaxies is constant and new galaxies which are forming continuously are filling the empty spaces
Sir J.C. Bose proposed a theory of the ascent of sap known as the pulsation theory. The Pulsating Universe Theory says that the universe follows self-sustaining cycles such as expanding and contrasting.
