I dont know. planet earth is mistory
One of them is that is has a Greenhouse effect on it.
The Earth's shape is roughly an oblate spheroidThe Earth has an atmosphereThere is frozen, liquid and gaseous water on Earth.
Mercury, Venus, Earth, and Mars have no rings.
Mercury is the only planet that does not have an atmosphere. It is a rocky ball covered in craters. It is only slightly larger than Earth's moon. It is the closest planet to the sun. Venus is called Earth's "sister planet" because its size and composition are very similar to Earth's. The surface features of Venus can not be seen from Earth, because it is constantly shrouded by thick clouds. Some areas of Venus are very flat, while other places have volcanoes, lava flows, and cracks called rifts.
The planet is Mercury. (Some people think it is Venus, but it is Mercury.)
Depending on where it and the Earth are in their orbits, the planet Venus can be either the "morning star" or the "evening star". In ancient times, some astronomers used the term for the planet Mercury, but in our light-polluted era, Mercury is tough to see.
Mercury because some planet had to be
Mercury Mercury is the planet closest to the Sun, at an average distance from the Sun of about 58 million kilometers. By comparison, Earth is about 150 million kilometers from the Sun, while Pluto, the furthest planet, averages an enormous 5.9 billion kilometers away! If you were standing on Mercury, the Sun would appear much larger than it does on Earth. And since the Sun-Mercury distance varies so much during Mercury's orbit, the Sun would appear larger at some times than at others.
Mercury has no atmosphere, is the closet to the sun, and has ice in some craters.
The inner planets are Mercury, Venus, Earth and Mars. They are also known as the four rocky or terrestrial planets and are the planets on the sunward side of the main asteroid belt.
The planet closest (proximity) to the Moon is planet Earth; the eighth largest planet in the solar system is Mercury (i.e., Mercury is the smallest of the eight planets). Mercury had some resemblance to the moon, having a dry, cratered surface with (almost) no atmosphere, so in that sense it could be argued as being the closest in the sense of physical appearance.
The gravitational force of a planet (or body in space) is directly related to its mass. Mercury is the planet with the least mass in the Solar System. Based on its size Mercury has only 1/3 of the gravitational force felt on Earth. Therefore, if you weigh 100-pounds on Earth, you would only be some 33 on Mercury's surface.