Planets are surrounding by stars in our galaxy. The difference between stars and planets is stars generate energy through nuclear reactions and planets reflect the radiation coming from their parent stars. To be categorized as a planet, it must do three things: (1) It orbits a start; here refers to the Sun. (2) It has enough gravity to form a spherical shape. (3) Its gravity can clear away other objects. Thus, Moons are not planets, because they orbit their planets; they are being known as natural satellites.
Let’s focus first on the planets orbit the Sun. The order of planets closest to furthest from the Sun are Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Haumea, Makemake, Eris, and possibly Planet X.
The Universe is so big, and we don’t know how big it is. Many people are wondering where we at. The exact answer is we are like a mole at God’s ass. So, let’s narrow down the scope of the neighborhood. Our solar system has eight planets (Pluto not included here), 170+ moons, millions of asteroids, and dwarf planets. We are currently living in Earth, the third planet from the Sun. It is nothing special, not the biggest or smallest planet, not the closest or farthest from the Sun. It just covers by deep blue oceans, lush forests, and swirly clouds; Aye, it is unique.
As you may know, Mercury is the closest planet to the Sun, and it is the smallest in the Solar System. You would think it is the hottest planet. Wrong! The temperature is approximately between 430°C and -180°C from day to night. Because it almost has no atmosphere, its temp can change dramatically from hot to freezing. As mentioned before, the Solar system has 170+ moons, but Mercury doesn’t have any moons. So, we can refer the Sun and Venus as the neighbors of Mercury.
Venus is named for love and war. It is the second closest planet to the Sun. It has a very dense atmosphere made of carbon dioxide CO^2 and nitrogen N^2 which can absorb heats. This makes it the hottest planet in the Solar System. Just be very careful when you get close to her because she will crush you. Although it doesn’t have moons, it has 1600+ volcanoes. Its surface temperature is approximately 462°C, probably nothing can live on it at all.
Heats
Heat transfer conveys energy and entropy from one location to another. It can be grouped into three categories: conduction, convection, and radiation.
Energy
Clean energy as renewable energy, can be borrowed from the Earth. The technologies power by solar, wind, water, geothermal, bioenergy, nuclear, and hydrogen and fuel cells.