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| Q. |
Which is the coldest among the following? |
| A. | Mars |
| B. | Earth |
| C. | Pluto |
| D. | Mercury |
| Answer» C. Pluto | |
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Explanation: Until it lost its planetary status in 2006, Pluto was the coldest with an estimated surface temperature between -235 and -210 degrees Celsius. But Pluto has now been relegated the status of a Dwarf Planet. Pluto has always had the 'honour' of being the coldest planet with an average temperature between 360 to -400 degrees Fahrenheit. This is because it is so far away from the sun: it is over 40 times further from the sun than planet Earth. Pluto also has no internal heat source and it even orbits in a ring of ice debris. |
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