1, 2 and 4
1 and 4
1, 3 and 4
1, 2, 3 and 4
A. 1, 2 and 4
Venus
Mercury
Uranus
Mars
Alfa Centauri
Proxima Centauri
Milky Way
Neptune
Melanesia, Micronesia and Polynesia
Polynesia, Micronesia and Melanesia
Melanesia, Polynesia and Micronesia
Micronesia, Polynesia and Melanesia
23 hours 56 minutes
24 hours
23 hours 46 minutes
24 hours 4 minutes
23 hours 56 minutes
24 hours
23 hours 46 minutes
24 hours 4 minutes
Earth's revolution and inclination of its axis
Revolution
Earth's rotation and inclination of its axis
Rotation
Planet
Moon
Star
Satellite
40000 km
4000 km
50000 km
5000 km
Venus
Mercury
Mars
Jupiter
Revolution
Rotation
Inclination of the earth's axis
Geoid shape of the earth
Single stars
Binary stars
Multiple stars
Cephied stars
Perigee
Apogee
Perihelion
Aphelion
4.3 seconds
4.3 years
4.3 minutes
4.3 hours
Time taken by the earth to complete one rotation with respect to a fixed star at infinity
Time taken by the earth to complete one revolution with respect to the Moon
Time taken by the earth to complete one rotation with respect to the Moon
Time taken by the earth to complete one rotation with respect to the Sun
Mars
Uranus
Jupiter
Venus
4, 2, 3, 1
4, 2, 1, 3
2, 4, 3, 1
4, 2, 3, 1
150 million km
145 million km
155 million km
140 million km
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
Alfa Centaury
Sun
Proxima Centaury
Dog Star
Planet
Meteore
Satellite
Comet
meteors
comets
meteorites
asteroids
Venus
Mercury
Mars
Jupiter
Perigee
Perihelion
Aphelion
Apogee
Day and night
Varying lengths of day and night at different times of the year
Differences in time between places on different meridians
The deflection of winds
100000 km per hour
10000 km per hour
1000 km per hour
100 km per hour
December 25
March 21
February 28
January 14
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
Uranus
Neptune
Saturn
Mars
Titan
Charon
Ganymede
Europa