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Its high noon for NASA's New Horizons spacecraft. On July 14th 2015 , after nine years and over 3 billion miles, the New Horizons is making its closest approach to Pluto. This illustration presents a view of Pluto as it would appear if placed slightly above our Earth's surface and viewed from space. Pluto has a diameter of about 2370 km, that is about 1/5 of that of our Earth's diameter.

 

 

Pluto

Earth

Mean radius

1185 km

= 0.18 Earths

 6371 km

Surface area

 

16 650 000 km2

= 0.033 Earths

 510 072 000 km2

Mass

1.305×1022 kg

= 0.002 Earths

 5.97 × 1024 kg

Surface gravity

0.655 m/s2

9.807 m/s2

 G Force  0.067 g

 1 g

Mean density  2.05 g/cm3 5.51 g/cm3

Volume

6.39×109 km3

0.0059 Earths

  1.08 × 1012 km3

Surface Temperature

min - 240.2 °C / - 400 °F

 min − 89.2 °C / - 128.6 °F

 

max - 218 °C / - 360.7 °F

 max + 56.7 °C / + 134,1 °F

 

mean - 229.2 °C / - 380.5 °F

 mean + 15 °C / + 59 °F

Composition

Nitrogen, methane, carbon monoxide

78.08% nitrogen

20.95% oxygen

0.930% argon

0.039% carbon dioxide

 Max. distance from the Sun

 7 311 000 000 km

 151 930 000 km

 Discovery date

 18 February 1930

 

 Named after

Pluto (Greek: Πλούτων, Ploutōn) was the ruler of the underworld in classical mythology. The earlier name for the god was Hades, which became more common as the name of the underworld itself (Wiki)

 The modern English word Earth developed from a wide variety of Middle English forms, which derived from an Old English noun most often spelled eorðe (Wiki)

 

   

 

Photo image credit: Fotalia / kentauros / Nadalina / alexokokok

Content from Wikipedia articles: Pluto, Earth

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