Ten fun facts about Mercury


Fact 1
It has an orbital period of about 88 Earth days.

Fact 2
It is named after the Roman deity Mercury, the fast-flying messenger to the gods.

Fact 3
Mercury is the smallest planet in the Solar System.


Fact 4
Because it has almost no atmosphere to retain heat, its surface experiences the greatest temperature variation of all the planets.

Fact 5
Because Mercury’s orbit lies within Earth's orbit (as does Venus’s), it can appear in Earth's sky in the morning or the evening, but not in the middle of the night.

Fact 6
Mercury is one of four terrestrial planets in the Solar System.

Fact 7
It has a rocky body like the Earth.

Fact 8
Mercury's core has a higher iron content than that of any other major planet in the Solar System.

Fact 9
Although Mercury can appear as a bright object when viewed from Earth, its proximity to the Sun makes it more difficult to see than Venus.

Fact 10
Its surface is very similar in appearance to that of the Moon, showing extensive mare-like plains and heavy cratering, indicating that the planet has been geologically inactive for billions of years.


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Short about Mercury
is the closest to the Sun of the eight planets in the Solar System.

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