GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements about comet is correct?
A
Comet is a small solar system made up of ice.
B
When the comet approaches the sun, it will be heated and begin to deflate.
C
As of July 2013, there are 4, 894 comets already known.
D
Even if a comet runs fast enough, also can’t escape from solar system.
Explanation: 

Detailed explanation-1: -Halley’s Comet, Comet Halley, or sometimes simply Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–79 years.

Detailed explanation-2: -The main difference between asteroids and comets is their composition, as in, what they are made of. Asteroids are made up of metals and rocky material, while comets are made up of ice, dust and rocky material. Both asteroids and comets were formed early in the history of the solar system about 4.5 billion years ago.

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