Question

What inner planets have almost no atmosphere?

Answer 1

Hint: Inner plant refers to a planet whose orbit lies within the asteroid belt,
Example: Mercury, Venus, Earth, or Mars. The heavier gases and gaseous compounds, such as carbon dioxide, nitrogen, oxygen, ozone, and argon, are abundant on the terrestrial planets.

Complete answer:
Mercury, Venus, Earth, and Mars are the four planets nearest to the Sun, and they are known as the inner planets. The four inner planets are made of rock and metal and have slower orbits, slower rotation, and no rings.

Mercury is the only planet without any kind of atmosphere. It does, however, have an exosphere, which is made up of gases that are absorbed from the solar wind and emitted from the planet's surface. Hydrogen, Helium, and Oxygen are among the pollutants.

Venus has a dense, hot atmosphere made mostly of carbon dioxide. Only by sending a probe through the atmosphere can the surface of Venus be seen. The atmosphere of the Earth is clearly breathable, consisting mostly of Nitrogen and Oxygen. Mars has a very thin atmosphere that is mostly carbon dioxide. Jupiter, Saturn, Uranus, and Neptune are gas/ice giants with primarily Hydrogen and Helium atmospheres.

Hence, out of all the inner planets in the solar system, i.e., Mercury, Venus, Earth, or Mars, Mercury is the only planet with no atmosphere.

Note: A planet is a big body that revolves around a star. The planets have an abundance of gases and gaseous compounds such as nitrogen and carbon dioxide. Mercury, Venus, Earth, and Mars are the four planets nearest to the Sun, and they are known as the inner planets.