state the features which make the unique planet. mention three main characteristics of asteroid
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Conditions favourable to support life are probably present only on Earth. The Earth is neither too hot nor too cold. It has water and air, which are very essential for our survival. The air has life-supporting gases like oxygen. Because of these reasons, the Earth is a unique planet in the solar system.
An asteroid is a minor planet of the inner Solar System. Historically, these terms have been applied to any astronomical object orbiting the Sun that did not resolve into a disc in a telescope and was not observed to have characteristics of an active comet such as a tail. As minor planets in the outer Solar System were discovered that were found to have volatile-rich surfaces similar to comets, these came to be distinguished from the objects found in the main asteroid belt.[1] The term "asteroid" refers to the minor planets of the inner Solar System, including those co-orbital with Jupiter. Larger asteroids are often called planetoids
- It has liquid water, plate tectonics, and an atmosphere that shelters it from the worst of the sun's rays.
- The planet with trees, mountains, valleys, air, water, ice, volcanoes, erosion and even seasons also.
- The only planet were different types of organisms live.
Nearly all asteroids are irregularly shaped, although a few of the largest are nearly spherical, such as Ceres. The surfaces of most asteroids are thought to be covered in dust.