Stars And The Solar System

Physics
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Last seen in 1986, which comet appears after nearly every 76 years?

A
Halley's
B
Biela's
C
Encke
D
Kohoutek
Hard
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Why is just one side of the Moon visible from Earth?

A
The Moon does not rotate on its axis as it orbits earth.
B
The Moon rotates once in the same amount of time that it orbits
C
Half ofthe Moon is always unlit by the Sun
D
Half of the Moon does not reflect light
Hard
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The inclination of orbit to ecliptic is maximum for planet _________ and minimum for planet _______.

A
Mercury and Earth
B
Mercury and Venus
C
Venus and Earth
D
Earth and Saturn
Hard
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What is the 67P/Churyumov-Gerasimenko ?

A
Exo-Planet
B
Oot Cloud Body
C
Comet
D
Asteroid
Hard
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Stars rise and set in the sky because

A
Earth orbits the sun
B
Earth rotates
C
The north pole points towards Polaris
D
The stars are moving in space
Hard
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