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the presence of many long, tall cliffs

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Q: What observational evidence supports the idea that Mercury once shrank by some 20 kilometers in radius?
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Related questions

Does Mercury have any people?

There has never been any evidence that Mercury supports life of any type.


What is Mercury's equator in kilometers?

Mercury's diameter is about 4875 kilometers, at the equator. The circumference is "pi" x 4875. That's about 15315 kilometers.


Is Mercury as big as Venus?

No. Mercury is much smaller than Venus. Mercury has a diameter of about 4,800 kilometers. Venus has a diameter of about 12,000 kilometers.


How many kilometers is closer to the sun venus or Mercury?

Mercury is closer at 57.91 million kilometers, Venus is farther at 108.2 million kilometers.


What is the average speed of Mercury?

mercury travels at about 48 kilometers per second, or 172,000 kilometers per hour.


What happened to Mercury's moon?

There is no evidence that Mercury ever had a moon.


What is the diameter of Mercury in scientific notation?

The Diameter of Mercury is 4,880 Kilometers.


How many kilometers bigger is Uranus than Neptune?

Neptune's diameter is 49,528 kilometers, while Mercury's is 3,473 kilometers. Neptune's diameter is 14 times the size of Mercury's.


Is DDR2 RAM supports to mercury mother boards?

yes


Is there evidence of water on mercury?

There is ice on it.


Mercury's diameter in kilometers?

it is 4 878km


What is the distance in millions of kms from the sun to mercury?

On average, this distance is about 58 million kilometers. However, the orbit of Mercury is far from circular and so the actual distance varies a lot. The nearest Mercury gets to the Sun is about 46 million kilometers. The farthest Mercury gets from the Sun is about 70 million kilometers.