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Planet Neptune

Neptune, the 8th planet from the Sun and nearly a twin of planet Uranus, is the fourth-largest planet by diameter and the furthest planet discovered so far in our solar system. Planet Neptune gets its name after the Roman god of the sea. It is a gas giant.

1,762 Questions

How are Uranus and Neptune similar?

Uranus and Neptune are similar in several ways: they are both ice giant planets, have similar compositions with thick atmospheres of hydrogen and helium, and possess multiple moons and faint rings around them. Additionally, they both have unique features such as extreme wind speeds and atmospheric patterns.

What is the tilt of Neptune?

Neptune has a tilt of about 28.3 degrees relative to its orbit around the Sun. This tilt contributes to the planet experiencing distinct seasons similar to Earth's.

What is the surface temperature on Neptune?

The planet Neptune's south pole is the current region facing toward the sun. As such it is the warmest part of Neptune featuring temperatures about ten degrees warmer than the rest of the planet whose average temperature is -200 Celsius.

Which planet is seventh from the sun?

Uranus is the seventh planet from the sun in our solar system.

Does Neptune have polar caps?

Yes, Neptune does have polar caps. Like Earth and other planets with atmospheres, Neptune's polar regions have icy caps composed of a mixture of water, ammonia, and methane ice. These polar caps experience seasonal variations as Neptune orbits the Sun.

What gases make up planet Neptune?

Planet Neptune's atmosphere is composed primarily of hydrogen, helium, and methane. These gases give Neptune its blue color. Other trace gases present include water vapor, ammonia, and other hydrocarbons.

What is Neptune's revolution?

In general, hotels will probably be cleaner. This is because they often employ a larger staff, and if you are staying in a high quality hotel that relies on their reputation you will be more likely to find a clean room. That's not to say rental cottages aren't clean, they're quite lovely and can make for a wonderful holiday getaway as well.

What is the great dark spot on Neptune?

The Great Dark Spot on Neptune is a massive storm system, similar to Jupiter's Great Red Spot, that was observed in the atmosphere of Neptune. It is an atmospheric feature characterized by its dark appearance and is thought to be a large cyclonic storm. The Great Dark Spot was first observed by the Voyager 2 spacecraft in 1989.

How many planets away from the sun is Neptune?

Neptune is in the same solar system as the earth. It is about 2.7 billion miles from earth. It takes like about four hours and two minutes to extend from the earth to Neptune. That would make Neptune about 0.00036782 light years from earth.

Is there any chance of life on neptune?

It is highly unlikely that there is any form of life on Neptune. Its extreme cold temperatures, lack of a solid surface, and harsh conditions make it inhospitable for known forms of life as we know it.

How much sunlight is absorbed by Neptune compared with the amount of sunlight absorbed by Earth?

Neptune is 30 times further from the Sun than Earth, so the fraction of sunlight it receives compared to the Earth is the square of that, so 1/900th as much. However, that is comparable with your living room in the evening with the lights turned on. It is still hundreds of times brighter than the full moon - enough to see in full colour.

However, beneath the clouds there will be less light of course - it would very much be a twilit world.

What is Neptune's core like?

Neptune's atmosphere is composed of hydrogen, helium, methane and ammonia. Its blue color is from the methane. It is surrounded by huge swirls of clouds and storms. There is a very faint collection of rings made up of pieces of material as big as cars and trucks. Neptune's core is thought to be made up of liquid rock that gradually turns into an ocean made up of hydrogen, helium, ammonia, methane and water.

How far is Jupiter from Neptune?

It varies, because both Jupiter and Neptune are orbiting the Sun at different rates.

When they are closest together, the distance between them is about 3.7 billion km.

When they are on opposite sides of the Sun, the distance is about 5.3 billion km.

The orbital speed of Venus' and Neptune?

According to http://solarsystem.nasa.gov/planets/, Venus has an orbital velocity of 78,341 mph, and Neptune's is 12,253 mph...

What are Neptune's rings made out of?

Nobody knows exactly.

Normally, planetary rings are made up of rocks caused by impacts between planets, moons and asteroids.

However, Neptune is not a solid planet, so there is nothing for other space objects to impact on. Also, Neptune's rings are very faint and incredibly difficult to see.

Therefore astronomers think the rings of Neptune are made of micrometre dust (dust the size of a millionth of a metre) and ice particles.

At what speed does Neptune orbit the sun?

The planet Neptune takes about 16 hours, 6 minutes, 36 seconds for one complete rotation, as evidenced by its visible outer atmosphere. This is a "day" on Neptune.

That's about 2/3rds of an earth day. Note that the period of rotation is measured by watching Neptune's magnetic field. The time cited is the time it takes the "whole planet" to rotate once on its axis. This is important because Neptune is not solid - it's a gas planet, and gas rotates differentially. Around the equator, the rotational speed of the "air" there is about 18 hours, and the rotational speed for the "air" at the poles is about 12 hours.

The rotation period (day) of Neptune's interior of 16 hours, 7 minutes was determined by Voyager 2. This was the first reliable determination of Neptune's rotation period. The 12 to 18 hour rotation periods found for the atmospheric features differ from the above value because of winds.

What kind of gas does Uranus have?

Uranus is one of the gas giants that is almost completely comprised of gas. The main gases in the atmosphere of Uranus is hydrogen and helium.

How many days does Neptune have in a year?

Neptune spins on its axis faster than earth, therefore it's day is only 16.11 hours. Whereas it's rotation around the sun is a much longer path. This means it takes 164.8 earth years to pass before Neptune completes one of it's rotations. So one rotation of an earth year takes 24 hrs * 365.15 =8766 hrs in one of our years. And 8766 earth years hours * 164.8 earth years in Neptune one rotation = 1,444,636.8 hours in one Neptune year. Each day on Neptune is 16.11 hours, therefore 1,444,636.8/16.11 hours per day = 89,673.2961 Neptune days in one Neptune year. Hmm. That is a long time between seasons.

How many square miles is Neptune?

Planet Neptune has a surface area of 2.941 billion sq miles (7.618 billion km²).

What is it like on Neptune?

Neptune doesn't have summer and winter like we do on Earth:
It takes 165 Earth years for Neptune to orbit the sun, and as it is the furthest planet in our solar system it doesn't have seasons like we do, due to it's distance; located about 30 times farther away from the Sun than Earth is. Only about 1/900th as much sunlight reaches Neptune as our planet. Yet, the small amount of sunlight it does receive, significantly affects the planet's atmosphere.
It has been summer in the south pole of Neptune for about 40 years now, and is now turning back to winter, which will last a further 40 years or so.
However, there is a lot of variables such as how methane leaks into the atmosphere causing temprature variations (i.e. right now, the south pole has a temprature of around 10 degrees and yet the rest of the planet settles around -200 degrees celsius and a lot of solar energy input during that time can make big temperature differences between the regions in continual sunlight and those with day-night variations.
Still, not a nice place to visit with wind speeds of around 2000 kph

How many people have visited Neptune?

No people have visited Neptune, as it is a gas giant located in our outer solar system and no manned missions have been sent to that planet. All our knowledge of Neptune comes from spacecraft flybys and observations from telescopes.

How long does it take light to travel from earth to Neptune?

Neptune has an average distance from the Sun of 2.8 billion miles and the earth is 0.09 billion miles from the sun so it is 2.71 billion miles from the earth. Light travels at 186,000 miles per second. So 2.71 x 109 divided by 186,000 = 14570 seconds = 4.05 hours = 4.62 x 10-4 years.

How big would Neptune be if the sun was nine meters in diameter?

If the Sun was nine meters in diameter, Neptune would be about the size of a small marble in comparison. Neptune has a diameter of about 49,244 kilometers, making it much smaller than the Sun, which has a diameter of about 1.4 million kilometers.

Does Neptune have 4 rings?

Here are the rings and their names including the arcs:

Ring Name: 1989 N3R Galle

Distance*: 41,900 km

Width: 15 km

Ring Name: 1989 N2R Leverrier

Distance*: 53,200 km

Width: 15 km

Ring Name: Lassell

Distance*: 55,400 km

Ring Name: Arago

Distance*: 57,600

Ring Name: 1989 N1R Adams

Distance*: 57,600 km

Width: - km

Ring Name: Liberte ("Leading" Adams arc)

Distance*: 62,930 km

Width: < 50 km

Ring Name: Egalite ("Equidistant" Adams arc)

Distance*: 62,900 km

Ring Name: Fraternite ("Following" Adams arc)

Distance*: 62,900 km

Ring Name: Courage (arc)

Distance*: 62,900 km

* The distance is measured from the planet center to the start of the ring.