The smallest planet in regards to both mass and volume is Mercury — at 4,879 km across and 3.3010 x 1023 kg, this tiny world is nearly 20 times less massive than Earth, and its diameter is about 2½ times smaller. In fact, Mercury is closer in size to our Moon than to Earth.
Which is the smallest planet of the world?
Mercury is the smallest planet in our solar system—only slightly larger than Earth’s Moon.
Which is the smallest planet answer?
So I’ll leave it up to you whether you believe Mercury or Pluto is the smallest planet in the solar system.
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The Smallest Planet In The Solar System – Mercury.
| Equatorial Circumference | 15,329 km |
|---|---|
| Surface Temperature | -173 to 427°C |
Which is the 2 smallest planet?
Closest to the sun, Mercury is the second smallest planet in our solar system. It has an orbital period of 87.97 Earth days and rotates on its axis once every 59 Earth days.
Which is smaller Pluto or Mercury?
But accurate measurements helped scientists conclude that Pluto was the smaller planet. … In terms of size, scientists now know that Mercury is significantly larger than Pluto. The diameter of Mercury is 4,879.4 km across, while Pluto’s diameter is 2,360 km across. So Mercury is about twice as large Pluto.
What planet is the hottest?
Venus is the exception, as its proximity to the Sun and dense atmosphere make it our solar system’s hottest planet. The average temperatures of planets in our solar system are: Mercury – 800°F (430°C) during the day, -290°F (-180°C) at night. Venus – 880°F (471°C)
What is the biggest planet on Earth?
Jupiter, being the biggest planet, gets its name from the king of the ancient Roman gods. Despite its size, Jupiter has the shortest day of any other planet; it only takes about 10 hours for a complete rotation.
Is the sun a planet?
The Sun is a star. There are lots of stars, but the Sun is the closest one to Earth. It is the center of our solar system.
Which planet would float in water?
Saturn could float in water because it is mostly made of gas.
What’s the biggest star in the universe?
The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun.
Which planet is the third smallest?
The second planet in the solar system, Venus, is the third smallest planet with a radius of 3761 miles (6052 km).
What planet is bigger than the sun?
Although the Sun looks small from Earth, it is really much, much bigger than our planet (and any other planet in the solar system).
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Big, Bigger, Biggest.
| Body | Diameter (Earth = 1) |
|---|---|
| Jupiter | 11.19 |
| Saturn | 9.40 |
| Uranus | 4.04 |
| Neptune | 3.88 |
What planet is closest to the sun?
Mercury—the smallest planet in our solar system and closest to the Sun—is only slightly larger than Earth’s Moon. Mercury is the fastest planet, zipping around the Sun every 88 Earth days.
Is Pluto smaller than Russia?
Russia has a bigger surface area than Pluto.
Pluto’s surface area is 16.7 million square kilometers. Russia’s surface area is 17,098,242 sq km.
Which planet is bigger Earth or Mars?
Mars (diameter 6790 kilometers) is only slightly more than half the size of Earth (diameter 12750 kilometers). Note the difference in color between the two planets. Almost 70% of Earth’s surface is covered by liquid water. In contrast, Mars now has no liquid water on its surface and is covered with bare rock and dust.
Which is bigger Mercury or the moon?
The smallest planet in our solar system and nearest to the Sun, Mercury is only slightly larger than Earth’s Moon.