Planet Neptune

The length of a day on Neptune is approximately 16 hours (16 hours 3-6 minutes at last estimate August 2007).

The wobbling of Uranus and Neptune's orbits is primarily influenced by gravitational interactions with other planets in the solar system, primarily Jupiter and Saturn. These interactions cause periodic variations in the orbits of Uranus and Neptune over long periods of time.

Neptune is an outer planet. It is the outermost planet in the solar system.

As of 2014, Neptune is the 8th and farthest planet from the Sun in the Solar System. It has a rotational period of 0.671 Earth days.

Urbain Le Verrier died on September 23, 1877 at the age of 66.

Yes. The diameter of Neptune is about 3.9 times that of Earth. The mass of Neptune is about 17 times that of Earth.

The French mathematician Urbain Le Verrier used mathematical calculations to predict the existence and position of Neptune based on discrepancies in the orbit of Uranus. His predictions were later confirmed by the observations of Johann Galle at the Berlin Observatory in 1846.

Neptune has a mass of about 17 times that of Earth, which means it is much heavier than Earth.

Neptune rotates horizontally on its axis, like most other planets in our solar system. Its axis is tilted at about 28.32 degrees relative to the plane of its orbit around the Sun, causing it to have seasons similar to Earth.

From Universe Today, Neptune, which is one of the giant planets...

"...[has] a diameter of 49,500 km."

The distance between Neptune and Pluto varies as they orbit the Sun, but on average it is about 2.7 billion miles (4.4 billion kilometers). With current technology, a spacecraft traveling at the speed of New Horizons (about 36,373 mph or 58,540 km/h) would take approximately 85 years to reach Neptune from Pluto.

The average surface temperature of Neptune is around -353 degrees Fahrenheit (-214 degrees Celsius).

Neptune is a big, blue ball of gas. But there's more to the story. It is mostly really, really, really cold hydrogen and helium with a bit of methane. (But we're not really sure why it's blue. Cool, huh?! Yeah!) It is thought to have a rocky core surrounded by a thick shell of ice (water, amonia and methane ice). The cloud layer is really thick, and the winds are otherworldly! Really! Temperatures in the clouds are a blazing 55 degrees Kelvin (55 Centigrade degrees above absolute zero). It even gets a bit colder from time to time. And wind? How about 2100km/h for ya? That's about 1300 miles per hour! Wow! Hit the link to Wikipedia (where some of this information originated) for some cool pics and more data. Neptune's upper atmosphere (what we see) is a mixture of hydrogen, helium, methane and traces of acetylene (C2H2), carbon dioxide, and other gasses. Only 10% of the planet's mass is in this outermost layer (approximately 3,100 mi or 5,000 km thick). Under the upper atmosphere lies a lower atmosphere of molecular (gaseous) hydrogen and helium, plus some ices (approximately 6,200 mi or 10,000 km thick). Below the atmosphere lies the mantle, a water ice and rock mixture that perhaps contains methane ice and ammonia ice mixed in. A core is at the center of the planet's mass, and it is likely a body with a 6,200-mi radius and represents 45% of the planet's mass that is composed of silicate rock and water ice. Like the other Jovian planets (Jupiter, Saturn, and Uranus), Neptune has a distinctive structure quite different from the terrestrial planets like Earth.

The time it takes to travel from Neptune to Saturn would depend on the speed of the spacecraft or vehicle used for the journey. With current technology, it would take several years to make the journey.

Yes, Neptune is larger than Mars. Neptune is the fourth largest planet in our solar system, while Mars is the fourth smallest. Neptune is nearly 4 times the diameter of Mars and is significantly more massive.

Neptune's gravity is 1.14 times the earths gravity. So if you weigh 100 pounds you would weigh 114 on Neptune.

Neptune is very similar in size and color to its gas giant neighbor, Uranus. Both planets are composed mostly of hydrogen, helium, and methane, giving them a bluish appearance. They also both have similar dimensions, with Neptune being slightly smaller in mass and diameter compared to Uranus.

Neptune is a gas giant, composed mainly of hydrogen and helium, with no solid surface like Earth. As a result, it does not have a soil type like terrestrial planets.

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Uranus and Neptune are both ice giants in our solar system, but they differ in their size and color. Uranus is slightly smaller than Neptune and has a bluish-green hue due to methane in its atmosphere, while Neptune is a deeper blue color. Additionally, Neptune has the strongest winds in the solar system, reaching speeds of up to 1,300 mph.

Yes it could be possible indeed. Neptune is mostly made up of hydrogen, helium, and methane. Because Neptune has lots of hydrogen it could be possible that it contains large oceans of water, because you have water you can have life... now that's a proven fact and some people might disagree with me but there are several examples of it on Earth.

After many, many, many dives into Earths deep ocean we have discovered large portions of life on coral reefs. This life has been estimated to live down there for billions of years so far and has not seen a day of light because they are miles down beneath the ocean. This life in OUR ocean has also dealed with the very large amounts of pressure 1000 times greater than what we have on the surface.

If life can exist deep beneath OUR ocean with no sunlight and very high amounts of pressure, it cane very well be contained on any planet or moon containing large amounts of water, including Neptune. These living organisims may not be intelegent though if that's what your asking. :)

Like in the question How long would it take to drive by car from earth to neptune? it's not the easiet thing to do, and it would take longer than your life time, about one hundred years, give or take. It's about 2,700,000,000 mile journey and nearly impossible to make, but if you did, you'd probably die before you made it.... Hope this helped Wolfgirl3252 == ==

Neptune has a diameter of approximately 49,244 kilometers, making it the fourth largest planet in our solar system. It is about 17 times the mass of Earth and is known for its vibrant blue color due to the presence of methane in its atmosphere.