The name of our
planet in Roman Mythology is the Roman god of commerce, travel, and
thievery. Mercury is the closest planet to the sun, it rotates
around the sun faster than any other planet in our solar system. It
takes 1407.5 hours for it to rotate on its axis. Mercury is the
smallest and innermost
system. The radius of Mercury is 1,516 mi. Mercurys mass is
3.285 times 10^23 kg. Mercury takes 88 days to rotate the sun
completely. Mercurys distance from the sun is 35.98 million mi.
Mercurys equatorial rotation velocity is 10.892 km/h (3.026 m/s).
Since Mercury is closest to the sun the surface temperatures can be
scorching hot and it can reach 840 degrees Fahrenheit (450 degrees
Celsius). Mercury also doesnt have a real atmosphere to entrap all
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Mercury is also the smallest planet in our solar system, it is slightly larger than Earths moon in fact. Astronomers think about 4 billion years ago an asteroid roughly 60 miles (100 kilometers) wide hit Mercury with an impact equal to 1 trillion leaving a vast impact crater. The crater is known as Caloris Basin and the crater can hold the whole state of Texas. In 2012 NASAs MESSENGER spacecraft discovered that there are water ice in the craters in the north pole on Mercury. The north pole on Mercury may be shaded permanently from the sun, that's why the water ice can be there. The south pole on Mercury may have also contained water ice but the MESSENGERS orbit didnt allow scientists to probe the area. Scientists think that comets or meteorites may have delivered the water ice there. Even though Mercury is already really small it continues to shrink today. Mercury is made up of a single continental plate over a cooling iron core. When the core cools, it solidifies, reducing the planets volume which causes Mercury to shrink and get even
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