GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is one fact about Mercury?
A
it has 2 irregularly shaped moons
B
it doesn’t have enough gravity to keep an atmosphere
C
it is the least dense of the planets
D
it is made mostly of gas
Explanation: 

Detailed explanation-1: -Instead of an atmosphere, Mercury possesses a thin exosphere made up of atoms blasted off the surface by the solar wind and striking meteoroids.

Detailed explanation-2: -Atmosphere and Weather: Mercury has an extremely thin and non-protective atmosphere. For all practical purposes, the atmosphere is nearly a vacuum. The sparse atmosphere is primarily composed of oxygen, sodium and hydrogen. Mercury’s atmospheric atoms are continuously being lost to space.

Detailed explanation-3: -Planets with smaller masses, like that of Mercury, or even Earth, don’t have enough gravity to hold onto the lighter gases, like Hydrogen and Helium.

Detailed explanation-4: -Small World. Mercury is the smallest planet in our solar system – only slightly larger than Earth’s Moon. Inside Track. Mercury is the planet that orbits the closest to the Sun. Fastest Planet. Rough Surface. Can’t Breathe There. Moonless. Ringless. Tough Place for Life. More items

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