10 Neptune facts: Interesting facts about Neptune – The Neptune planet

Neptune facts

Neptune is the eighth and last planet of our solar system known today. If we consider Pluto as a planet then Neptune would be the second last planet of our solar system. Neptune gets its name after the Roman god of the sea. It has some more fun and interesting facts like its name. In this post, I’ve compiled some interesting information as well as interesting facts about Neptune.

Neptune facts and information

Temperature: Minus 210 – 220 degree centigrade

Length of a day: 16 hours 6 min 14 seconds (of earth)

Length of a year: 164 earth years

Atmosphere: 99% of hydrogen and helium

Force of gravity: 1.19 (0.19 times more than earth’s force of gravity)

No. of moons: 13 confirmed and one unconfirmed

Mass: 1.02 * 10^26 kg

Discovery Date: 23 September 1846

I know you are amazed after reading this unusual information about Neptune, especially about its temperature and length of a year. The reason for both of these is same i.e the distance from the sun. That’s why it takes more to complete its cycle around the sun.

Also, due to the distance from the sun, its temperature is very low. As you can see, its atmosphere is not suitable for life. It consists of about 80 percent hydrogen and 19 percent helium.

The below five minutes beautiful and informative animated video shows some cool Neptune facts and information (In English). Go ahead and enjoy watching it!

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Interesting Neptune facts

1) Informative Neptune facts

  • It was discovered by mathematical prediction

This planet was discovered using mathematical predictions rather than by empirical observations. Johnn Galle observed it with a telescope in 1846 within the position predicted by Urbain Le Verrier.

  • No astronomer has reached Neptune yet

Yes, it’s true that almost all the information about planet Neptune is studied with the telescope and Voyager 2 spacecraft etc. But no astronomer has reached on this planet yet. It is hard to study it from earth with a telescope due to its distance from earth.

  • Only one spacecraft has reached Neptune yet

Voyager 2 is the only spacecraft to reach Neptune. It flew by the planet in August 1989. This spacecraft took the first image of the Neptune and sent back to earth. The signals took more than four hours to reach earth.

  • We can’t see it with naked eye

Unlike some other planets in our solar system, It can’t be seen with naked eye. It’s the farthest planet from earth and sun. That is why we can’t see it with the naked eye from earth. With high-resolution telescopes likes Hubble space telescope, we can study some of its aspects like it’s moons.

  • Mass of Neptune is about 17 times the mass of earth

Its mass is 1.02 * 10^26 kg which is about 17 times the mass of earth. Mass of earth is 5.972*10^24 kg.

  • It has second biggest force of gravity in our solar system

Force of gravity on the Neptune is 1.19, higher than compared to Earth’s force of gravity i.e one.

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2) Neptune facts for kids

  • It has 13 confirmed moons

It has 13 confirmed moons and one unconfirmed moon. Their names are Triton, Laomedeia, S/2004 N1, Proteus, Nereid, Halimede, Despina, Galatea, Psamathe, Sao, Naiad, Thalassa, Neso, and Larissa.

  • Neptune is predicted to be the coldest planet of solar system

Generally, we say that the further is a planet from the sun, the colder it is. Since it is the farthest planet from the sun, we predict it to be the coldest planet in our solar system.

  • About 60 earths can fit into it

This fact is enough to guess how big is it compared to our little earth. Its diameter is about 49,244 Km while the diameter of our earth is only 12,742 Km.

  • You weigh more on Neptune than on Earth

You weigh slightly more there than on earth. It is because it has greater gravitational force than Earth. It has about 0.19 times more gravitational pull than on earth.

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