Pluto
Neptune
Uranus
Venus
A. Pluto
Venus and Mercury
Venus and Uranus
Venus and Neptune
Mercury and Uranus
Position of the Sun during summer solstice
Position of the vertical Sun during winter solstice
A star showing the position of the South Pole
Point of intersection of Antarctic Circle and the Prime Meridian
Alfa Centaury
Sun
Proxima Centaury
Dog Star
47 degrees
23.5 degrees
12 degrees
30 degrees
Moon
Ganymede
Europa
Cheron
Columbus
Varahmihir
Aryabhat
Copernicus
Pulsar
Brittle Star
Black hole
Quasar
White Dwarf
Black Dwarf
Quasar
All of the above
25 million yrs
100 million yrs
250 million yrs
500 millionyrs
Venus
Mercury
Mars
Jupiter
1 and 2
1, 2and 3
1, 2, 3 and 4
1, 2, 3, 4 and 5
1.41
1.47
0.59
0.5
A bay
A gulf
A strait
An isthmus
Solar System
Universe
Space
Constellation
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
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
17214 km
12741 km
12714 km
17124 km
Equator
Tropic of Cancer
South Pole
North Pole
Earth
Jupiter
Mercury
Venus
A unit of velocity
A unit of distance
A unit of pressure
A unit of time
45°S
60°S
60°N
45°N
5th
4th
6th
3rd
90
80
50
100
A lake is small and a tank is big
A lake has flowing water, a tank has still water
A lake is a geographical feature, a tank is not
Both are land-enclosed water bodies, but the latter is man-made
Hydrogen and oxygen
Carbondioxide and oxygen
Hydrogen and hydrogen compounds
Nitrogen and helium
1.59
1.41
0.5
1/3rd
wanderer
pollution
celestial body
heavenly body
0.825
0.98
0.998
0.02
Uranus
Neptune
Saturn
Mars