The term 'comet' has ancient roots in word origins related to astronomy.
The word 'comet' originates from the ancient Greek language.
Therefore, the ancient Greek word is the source for 'comet', signifying a 'long-haired star'.
Option 1, Greek, is the correct origin.
A huge collection of gas, dust and billions of stars is called a:
The Greenwich Mean Time is the local time at :
The force exerted by rotation of the earth is known as:
How many hours is one solar day
Moon changes its shape everyday due to: