What are the 8 planets and their definition?

What are the 8 planets and their definition?

The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is closest to the Sun. Neptune is the farthest. Planets, asteroids, and comets orbit our Sun. They travel around our Sun in a flattened circle called an ellipse.

What are the 12 planets and definition?

(Astronomy) the system containing the sun and the bodies held in its gravitational field, including the planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune), the dwarf planets (Eris, Pluto, and Ceres), the asteroids, and comets.

What is solar system in simple words?

: the sun together with the group of celestial bodies that are held by its attraction and revolve around it. also : a similar system centered on another star.

What are the 12 planets called?

• Mercury. Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth’s Moon. …
• Venus. Venus spins slowly in the opposite direction from most planets. …
• Earth. …
• Mars. …
• Jupiter. …
• Saturn. …
• Uranus. …
• Neptune.

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• Mercury. Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth’s Moon. …
• Venus. Venus spins slowly in the opposite direction from most planets. …
• Earth. …
• Mars. …
• Jupiter. …
• Saturn. …
• Uranus. …
• Neptune.

Which is the hottest planet?

Venus’ thick atmosphere traps heat creating a runaway greenhouse effect – making it the hottest planet in our solar system with surface temperatures hot enough to melt lead. The greenhouse effect makes Venus roughly 700°F (390°C) hotter than it would be without a greenhouse effect.

What are the 5 characteristics of planets?

• Planets are round and opaque celestial bodies that revolve around the sun in a fixed orbit.
• Planets rotate around their own axis.
• Planets also revolve around the sun.
• Planets are not self-luminous like stars.

• Planets are round and opaque celestial bodies that revolve around the sun in a fixed orbit.
• Planets rotate around their own axis.
• Planets also revolve around the sun.
• Planets are not self-luminous like stars.

What is the full meaning of planet?

Planet goes back to ancient Greek planēt- (literally, “wanderer”), which is derived from planasthai, a Greek verb which means “to wander.” The word was originally applied to any of seven visible celestial bodies which appeared to move independently of the fixed stars—the sun, the moon, Mercury, Venus, Mars, Jupiter, …

What are the 2 main types of planets?

• Mercury.
• Venus.
• Earth.
• Mars.
• Jupiter.
• Saturn.
• Uranus.
• Neptune.

• Mercury.
• Venus.
• Earth.
• Mars.
• Jupiter.
• Saturn.
• Uranus.
• Neptune.

What is the coldest planet?

However, the coldest planet is not Neptune, but Uranus – even though Uranus is a billion miles closer to the Sun than Neptune. Uranus holds the record for the coldest temperature ever measured in the Solar System: a very chilly -224℃.

What is a solar system for kids?

The solar system consists of the Sun and everything that orbits, or travels around, the Sun. This includes the eight planets and their moons, dwarf planets, and countless asteroids, comets, and other small, icy objects. However, even with all these things, most of the solar system is empty space.

What is called solar system for kids?

The Solar System is made up of the Sun and all of the smaller objects that move around it. Apart from the Sun, the largest members of the Solar System are the eight major planets. Nearest the Sun are four fairly small, rocky planets – Mercury, Venus, Earth and Mars.

What are the 7 solar systems?

The planets, in order of their distance outward from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

What is the 100th planet called?

Designations
Named after	Jupiter
Adjectives	Jovian /ˈdʒoʊviən/
Orbital characteristics
Epoch J2000

Designations
Named after	Jupiter
Adjectives	Jovian /ˈdʒoʊviən/
Orbital characteristics
Epoch J2000

Why Pluto is not a planet?

The International Astronomical Union (IAU) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one—it “has not cleared its neighboring region of other objects.”

How many galaxies are there?

The Hubble Deep Field, an extremely long exposure of a relatively empty part of the sky, provided evidence that there are about 125 billion (1.25×1011) galaxies in the observable universe.

What are the 8 planets for kids?

There are eight planets that orbit around the Sun. In order, going from the closest planet to the Sun, to the one that is farthest away, they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

How did the 8 planets get their names?

All of the planets, except for Earth, were named after Greek and Roman gods and godesses. Jupiter, Saturn, Mars, Venus and Mercury were given their names thousands of years ago. The other planets were not discovered until much later, after telescopes were invented.

Who named the 8 planets?

The Romans named the planets after their gods. Mercury, the closest planet to the Sun, has the shortest revolution. Since it appeared to move faster than the others, the Romans named it after the god that carried messages. Venus shines brightest in the night sky.

What is the 8th planet called?

Neptune orbits our Sun, a star, and is the eighth planet from the Sun at a distance of about 2.8 billion miles (4.5 billion kilometers).