Question

Which of the following planets is nearest to the sun? Does it have any moon?

Answer 1

Hint: It is the smallest planet in our solar system and its orbit around the sun takes \[88\] days, the shortest of all the sun’s planets. It is a rocky planet, also called a terrestrial planet, and has a surface somewhat similar to earth’s moon. It is one of the moonless planets in the solar system.

Complete step by step answer:
Mercury is the planet in our solar system which is closest to the sun. It is one of the terrestrial planets of our solar system and has a rocky body like earth. It is the smallest planet in our solar system, and it takes around \[88\] earth days to complete one full orbit around the earth. Mercury moves in an elongated orbit, which itself seems to rotate relative to the Sun, as the point closest to the Sun shifts ever so slightly from one orbit to the next. There are no rings around mercury, and it is of the moonless planets in our solar system. Mercury has a thin atmosphere that is composed mostly of oxygen, sodium, hydrogen, helium, and potassium and thus is not suitable for life. This proximity to the Sun means the planet may only be seen during the twilight at the western horizon after sunset or the eastern horizon before sunrise. At this moment, it may seem like a bright star-like object but is typically far more difficult to observe than Venus. Thus, it was provided different names for its emergence as both an ‘evening star’ and a ‘morning star’.
The Eccentricity of orbit- \[0.2056\]
Radius (mean)- \[2,439.7{\text{ }}km\]
Rotation period (mercurian sidereal day)- \[58.646{\text{ }}Earth{\text{ }}days\]
The inclination of the equator to orbit-\[0^\circ \]
Mean surface temperature-\[440{\text{ }}K{\text{ }}\left( {332{\text{ }}^\circ F,{\text{ }}167{\text{ }}^\circ C} \right)\]
The average distance from the sun-\[57,909,227{\text{ }}km{\text{ }}\left( {0.39{\text{ }}AU} \right)\]

Note:
 Though closest Mercury is not the hottest planet as Mercury does not have any atmosphere to absorb heat whereas Venus has a mainly Carbon Dioxide atmosphere which absorbs heat and reflects a little of it which causes the greenhouse effect to happen.