Venus
(more details below)

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Size & Distance
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* Venus is the second closest planet to the sun at a distance of about 67 million miles.

* Diameter of 7,520 miles, Venus is roughly the same size as Earth — just slightly smaller.

* It takes sunlight 6 minutes to travel from the Sun to Venus.

 

* If the sun were as tall as a typical front door, the Earth and Venus would each be about the size of a UK penny.  

Geology
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* Venus is in many ways similar to Earth in its structure. It has an iron core that is approximately 4,000 miles in diameter.

 

* Above that is a mantle made of hot rock slowly churning due to the planet's interior heat.

 

* The surface is a thin crust of rock that bulges and moves as Venus' mantle shifts and creates volcanoes.

Atmosphere / Weather
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* This planet spins slowly and in the opposite direction from most planets.

 

* Venus' has a thick atmosphere consists mainly of carbon dioxide, with clouds of sulfuric acid droplets and it traps heat in a runaway greenhouse effect, making it the hottest planet in our solar system.

 

* The thick atmosphere traps the Sun's heat, resulting in surface temperatures higher than 880 degrees Fahrenheit (470 degrees Celsius).

 

* The atmosphere has many layers with different temperatures.

 

* At the level where the clouds are, about 30 miles up from the surface, it's about the same temperature as on the surface of the Earth.

Orbit & Rotation
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* Venus makes a complete orbit around the Sun (a year in Venusian time) in 225 Earth days or slightly less than two Venusian day-night cycles as on Venus.

 

* One day-night cycle takes 117 Earth days because Venus rotates in the direction opposite of its orbital revolution around the Sun..

 

* Its orbit around the Sun is the most circular of any planet — nearly a perfect circle. Other planet's orbits are more elliptical, or oval-shaped.

credit - NASA