After sunset and before sunrise we can see bright planet, the Venus. Venus is very beautiful. So this planet is named because Venus is Greek and Roman's mythology's the most beautiful goddess. The Venus' surface is very hot. It is 480° C. But its surface isn't beautiful. The Venus and the Earth's physical characteristic is simillar, so they called twin planets. Let's learn about Earth's sister Venus.
![Venus in approximately true colour, a nearly uniform pale cream, although the image has been processed to bring out details.[1] The planet's disc is about three-quarters illuminated. Almost no variation or detail can be seen in the clouds.](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tY3ohX-18ZutLNDByiBuO2mLj3YPnArtEBpooYKdm8TWpxidxSzaJi4lFUrPNuAQNSiC4QZwvjGXID7Qr-0Ky-6J1SBvoSRXXGCN8an4EgCL4bUEIfOCA6kHI9S4yM6DBh-XQcXxDES-QsQTIHhatH9jBOLEI4RYuDXUnKeUCd=s0-d)
1.Venus' orbital characteristic
The venus is closer from the sun than the Earth. Venus is about 0.7AU from the Sun. So its hot.
Aphelion:108,939,000 km(0.728AU)
Perihelion:107,477,000km(0.718AU)
Venus' orbital period is 224.701days. But its rotation period is bigger than its orbital period. Venus' rotation period is about 243days. And Venus rotate unusually. Every planets rotate east to west, but Venus rotate west to east. If you live in the Venus, you can see sun rest in west. And it tilts very small, so it doesn't have season.
Orbital period:224.701days
Rotation period:243.018days
Axial tilt:177.36°
2.Venus' physical characteristic
The Venus' mass and volume and surface area and surface gravity is simmilar to the Earth. That's the reason that the Venus called "The Earth's sister"
Surface area:4.60×108 km2 (0.902 Earths)
Volume:9.28×1011 km3 (0.866 Earths)Mass: 4.8676×1024 kg (0.815 Earths) Surface gravity:8.87 m/s2 (0.904 Earths)
Venus is very hot. And venus has greenhouse effect, so Venus is hotter than Mercury
Mean temperature:737K
Maximum temperature:773K
3.Venus' atmosphere's characteristic
Venus has large atmosphere. So we can't see Venus' surface. We can see only cloud. Surface pressure is 92bar. And its 96.5% is carbon dioxide. So we can know greenhouse effect occured in the Venus.
Surface pressure: 92bar
Compositon
96.5% carbon dioxide
![Venus in approximately true colour, a nearly uniform pale cream, although the image has been processed to bring out details.[1] The planet's disc is about three-quarters illuminated. Almost no variation or detail can be seen in the clouds.](http://en.wikipedia.org/wiki/File:Venus-real.jpg)
1.Venus' orbital characteristic
The venus is closer from the sun than the Earth. Venus is about 0.7AU from the Sun. So its hot.
Aphelion:108,939,000 km(0.728AU)
Perihelion:107,477,000km(0.718AU)
Venus' orbital period is 224.701days. But its rotation period is bigger than its orbital period. Venus' rotation period is about 243days. And Venus rotate unusually. Every planets rotate east to west, but Venus rotate west to east. If you live in the Venus, you can see sun rest in west. And it tilts very small, so it doesn't have season.
Orbital period:224.701days
Rotation period:243.018days
Axial tilt:177.36°
2.Venus' physical characteristic
The Venus' mass and volume and surface area and surface gravity is simmilar to the Earth. That's the reason that the Venus called "The Earth's sister"
Surface area:4.60×108 km2 (0.902 Earths)
Volume:9.28×1011 km3 (0.866 Earths)Mass: 4.8676×1024 kg (0.815 Earths) Surface gravity:8.87 m/s2 (0.904 Earths)
Venus is very hot. And venus has greenhouse effect, so Venus is hotter than Mercury
Mean temperature:737K
Maximum temperature:773K
3.Venus' atmosphere's characteristic
Venus has large atmosphere. So we can't see Venus' surface. We can see only cloud. Surface pressure is 92bar. And its 96.5% is carbon dioxide. So we can know greenhouse effect occured in the Venus.
Surface pressure: 92bar
Compositon
96.5% carbon dioxide
3.5% nitrogen
0.015% sulfur dioxide
0.007% argon
0.002% water
vapour
0.0017% carbon monoxide
0.0012% helium
0.0007% neon
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