GK - Important Facts About The Universe For Competitive Exams
The vast surrounding Space in which Stars, Planets, Satellites as well as our Earth all objects on it is called Universe. The billions of Stars are called Galaxies. The universe is made up of over 90 % hydrogen.
So let's read and know some important Facts about The Universe for General Knowledge Purpose.
Important Facts About Universe:
Jupiter:
Biggest Planet
Also called "Lord of the Heavens"
Fastest rotation
Revolution 12 years
58 satellites (Maximum among other planet)
Ganymeda is the largest satellite in solar system
Earth:
Blue Planet,
Area 510 Million Sq Km
Aphelion - farthest point of earth from sun
Perigee - Nearest position of Earth to Moon
Apogee - Farthest position of Earth from Moon
Rotation speed 23 hr, 56 Min, 40.90 sec
Revolution Speed 365 days, 5 hr & 45.61 sec
Days equal - March 21
Nights Equal - 23rd September
Longest Day - 21 June
Shortest Night - 22 Dec
Uranus:
Green Panet
Identified by William Herhel in 1781
Revolution 84 years
Rotation 10.8 years
21 Satellites
Venus:
Also known Earth's Twin, Morning star, evening star
Brightest Planet
Nearest planet to earth
Hottest Planet
Rotates Clockwise
No satellite
Neptune:
Discovered by J. G Galle in 1846
Coldest Planet
Slowest rotation in solar system
Farest from Sun
Revolution 165 years
Rotation 15.7 days
Mercury:
Fastest Revolution
Nearest to Sun
Smallest Planet
Rotation 58.65 days
Revolution 88 days
Mars:
Also called Red Planet
Revolution 687 days
Rotation 24.6 hrs
2 satellites including the smallest satellite 'Demios'
Saturn:
Second largest planet
Revolution 29 years
Rotation 10.3 hrs
More than 39 satellites
Has system of rings
Now Solve the Questions given below:
Q. 1 Which of the following planets is known as "Morning Star"?
Mercury
Venus
Mars
Jupiter
Q. 2 Which of the following is the brightest planet?
Mercury
Mars
Jupiter
Venus
Q. 3 Which Planet is known as the "Earth's Twin"?
Venus
Mars
Uranus
Neptune
Q. 4 which of the following planets of the solar system had the longest day?
Mercury
Jupiter
Venus
Earth
Q. 5 The speed of rotation of the Earth is the highest:
Along the Equator
At the North Pole
Along the Tropic of Cancer
Along the Arctic Circle