Note: The answer has changed due to new findings as given below.)

• A natural satellite is any celestial body in space that orbits around a larger body.
• In 2019, Saturn has overtaken Jupiter as the planet with the most moons, a team discovered 20 new moons orbiting Saturn, bringing its total to 82.
• Twelve new moons of Jupiter were recently discovered in February 2023, bringing the total to 92.

• The solar system contains 8 planets. These are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune in order of their distance from the sun.
• The inner planets, Mercury, Venus, Earth, and Mars, are primarily composed of rock.
• Jupiter, Saturn, Uranus, and Neptune are the outer planets, which are composed of gases.
• Venus
• Venus is the second planet from the sun in terms of distance.
• Venus has days that are equal to 243 Earth days.
• It is a rocky, terrestrial planet. Venus' solid surface is a volcanically shaped landscape.
• The majority of Venus' lethal atmosphere, which also includes clouds of sulfuric acid (H2SO4) particles, is composed of carbon dioxide (CO2) and nitrogen (N2).
• It reaches incredibly high temperatures of about 480° Celsius.
• Venus rotates anticlockwise to the earth. It denotes that the sun rises in the west and sets in the east on Venus.
• Mars
• On Mars, a day lasts just a little bit longer than 24 hours.
• The solid surface of Mars has been altered by volcanic activity, collisions, crustal movement, meteorological phenomena including dust storms, and more.
• The main components of Mars' thin atmosphere are argon (Ar), nitrogen (N2), and carbon dioxide (CO2).
• The two moons of Mars are called Phobos and Deimos.
• Mars is known as the "Red Planet" due to the soil's iron minerals' susceptibility to oxidise, or rust, which gives the planet's dusty atmosphere and soil a reddish hue.
• Jupiter
• Jupiter can fit about 1,300 Earth.
• A day lasts around 10 hours on Jupiter (the time it takes for Jupiter to rotate or spin once).
• As a gas-giant planet, Jupiter is devoid of a solid surface.
• Jupiter's inner core may consist of a solid mass the size of Earth.
• Much of Jupiter's atmosphere is composed of helium (He) and hydrogen (H2).
•  In 1979, the Voyager-1 mission discovered a small ring system around Jupiter. There are ring systems on each of the four large planets in our solar system.
• Life as we know it is unsuitable with Jupiter. Some of Jupiter's moons do, however, have seas beneath their surfaces that may be home to life.
• Saturn
• Saturn is a gas-giant planet without a solid surface.
• The main constituents of Saturn's atmosphere are helium (He) and hydrogen (H2) (He).
• Saturn's ring system, which comprises seven rings with different spaces and divides between them, is the most striking.
• The only spacecraft to have visited Saturn are the Pioneer 11, Voyager 1 and 2, and Cassini-Huygens missions. Saturn, its moons, and its rings have been the subject of Cassini's research since 2004.