as the comet rotates around the Sun, the light mass of the comet is pushed away due to the centrifugal force alone
as the comet rotates, the lighter mass of the comet is attracted by some star situated in the direction of its tail
the radiation emitted by the Sun exerts a radial pressure on the comet throwing its tail away from the Sun
the tail of the comet always exists in the same orientation
A. as the comet rotates around the Sun, the light mass of the comet is pushed away due to the centrifugal force alone
Planet
Meteore
Satellite
Comet
Sunspots
Pulsars
White Dwarfstar
Supernova
Siderial Year
Solar Year
Cosmic Year
Leap Year
Meteors
Pole Stars
Comets
Stars
December 25
March 21
February 28
January 14
Earth
Mars
Uranus
Neptune
24 hours
20 hours
365 % days
366 days
The Dead Sea
The Aral Sea
The Caspian Sea
Lake Baikal
Comet
Great Bear
Meteores
Asteroides
12757 km
17257 km
17527 km
17572 km
Quasars
Polar Auroras
Meteorites
Pulsar
17214 km
12741 km
12714 km
17124 km
6071km
6571km
6371km
6771 km
Moon's period of rotation on its axis with respect to the earth.
Moon's period of revolution around the earth.
Moon's period of revolution with respect to a star at infinity
Moon's period of revolution with respect to the Sun
A headland
A spit
A peninsula
A cape
5th
4th
6th
3rd
Atmospheric composition
Thermal conditions
Occurrence of ice caps and frozen water
Occurrence of ozone
1.59
1.41
0.5
1/3rd
Columbus
Varahmihir
Aryabhat
Copernicus
Perigee
Perihelion
Aphelion
Apogee
4, 2, 3, 1
4, 2, 1, 3
2, 4, 3, 1
4, 2, 3, 1
Light year
Nautical mile
Statute mile
Kilometre
Earth
Saturn
Pluto
Neptune
a rapidly moving star
a piece of matter which has entered the earth's atmosphere from outer space
part of a constellation
a comet without a tail
Aurora Australis
Quasars
Aurora Borealis
Pulsar
July 23
June 21
May 20
April 31
Indian
Pacific
Atlantic
Arctic
90
80
50
100
100000 km per hour
10000 km per hour
1000 km per hour
100 km per hour
Eight minutes
Ten minutes
Four minutes
Twelve minutes