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Mercury

Mercury

The smallest planet in our solar system and nearerst to the Sun, 

Mecury is only slightly larger than the Earth's Moon. From the surface of Mercury, the sun would appear more than three times as large as it does when viewed from Earth, and the sunlight would be as much as seven times brighter. 

Despite its proximity to the Sun, Mercury is not the hottest planet in our solar system – that title belongs to nearby Venus, thanks to its dense atmosphere. 

Mercury is the fastest planet, zipping around the Sun every 88 Earth days.

Mercury is appropriately named for the swiftest of the ancient Roman gods.

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Orbit and rotation

Orbit and rotation

Mercury's highly eccentric, egg-shaped orbit takes the planet as close as 29 million miles (47 million kilometers) and as far as 43 million miles (70 million kilometers) from the Sun. It speeds around the Sun every 88 days, traveling through space at nearly 29 miles (47 kilometers) per second, fa...

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Rings

Mercury has no rings

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Surface

Surface

Mercury's surface resembles that of Earth's moon, scarred by many impact craters resulting from collisions with meteoroids and comets. Craters and features on Mercury are named after famous deceased artists, musicians or authors.

Temperatures on the surface of Mercury are extreme, both hot ...

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Formation

Formation

Mercury formed about 4.5 million years ago when gravity pulled swirling and dust together to form this small planet nearest the Sun. Like its fellow terrestrial planets, Mercury has a central core, a rocky mantle and a solid crust.

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Potential for life

Potential for life

Mercury's environment is not conductive ot life as we know it The temperatures and solar radiation that characterize this planet are most likely too extreme for organisms to adapt to.

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Moons

Moons

Mercury has no moons.

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Quick facts

Quick facts

Day: 176 Earth days

Year: 88 Earth days

Radius: 1,516 miles | 2,439.7 kilometers

Planet type: Terrestrial

Temperature: 800 degrees Fahrenheit, 430 degrees Celsius/ -290 degrees Fahrenheit ...

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Atmosphere

Atmosphere

Instead of an atmosphere Mercury possesses a thin exosphere made up of atoms blasted off the surface by the solar wind and striking meteoroids. Mercury's exosphere is composed mostly of oxygen, sodium, hydrogen, helium and potassium.

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Size and distance

Size and distance

With a radius of 1,516 miles (2,440 kilometers), Mercury is a little more than 1/3 the width of Earth.

If Earth were the size of a nickel, Mercury would be about as big as a blueberry.

From an average distance of 36 million miles (58 million kilometers), Mercury is 0.4 astronomical un...

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Magnetosphere

Magnetosphere

Mercury's magnetic field is offset relative to the planet's equator. 

Though Mercury's magnetic field at the surface has just one percent the strength of Earth's, it interacts with the magnetic field of the solar wind to sometimes create intense magnetic tornadoes that funnel the fast, hot ...

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Structure

Structure

Mercury is the second densest planet, after Earth. It has a large metallic core with a radius of about 1,289 miles (2,074 kilometers), about 85 percent of the planet's radius. 

There is evidence that it is partly molten, or liquid. Mercury's outer shell, comparable to Earth's outer shell (c...

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CURATED FROM

CURATED BY

rogierhoekstra

I'm passionate about helping people live their best lives. I'm a lifestyle coach and fitness trainer, and I also write and take photographs. Check out the link below for more and follow me on twitter!

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Venus

Venus

Venus is the second planet from the Sun and our closest planetary neighbor. 

Similar in structure and size to Earth, Venus spins slowly in the opposite direction from most planets. 

Its thick atmosphere traps heat in a runaway greenhouse effect, making it the hottest planet in our sol...

Orbit and rotation

Orbit and rotation

Mercury's highly eccentric, egg-shaped orbit takes the planet as close as 29 million miles (47 million kilometers) and as far as 43 million miles (70 million kilometers) from the Sun. It speeds around the Sun every 88 days, traveling through space at nearly 29 miles (47 kilometers) per second, fa...

5 Need-to-Know Facts about MERCURY.

On mercury Daytime Temperatures can reach 430 degrees Celsius and drop to -180 degrees Celsius at night.

One day-night cycle on Mercury takes 175.97 Earth days and a year of Mercury is just 88 Earth days. 

Standing on Mercury's surface at its closest approach to the Sun, our star woul...

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