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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

What does neptunes symbol mean?

The Neptune symbol represents the god Neptune in Roman mythology. It consists of a trident, which was a weapon used by Neptune to control the sea. It also symbolizes power, authority, and man's connection to the ocean and its mysteries.

What would happen if earth was 2 AU away from the sun?

The idea of the sun moving around the earth is one that is hard to get a handle on. We can visualize it, but since gravity controls the motion of the planets and stars, how could the comparatively small earth cause the sun to move around it? It's not something that really makes sense. If the sun could somehow move round the earth, our days would be a little different. They'd be a bit longer or shorter, depending on the rotational direction the sun took round the earth compared to the earth's rotation. Oh, and there'd be no seasons. The "tilt" of the earth would "lock it in" as regards its relationship to the sun, and it would not change. Whatever season it was when the earth stopped rotating around the sun and the other happened would remain that way. ______________ Another thought: It is obvious that the sun is at the center of our solar system, and the many millions of objects in our system are indeed orbiting the sun. But in a sense, the sun does also move around the earth. the reality is that when an object orbits an object, they in fact are orbiting each other. The earth-moon system is a good example. It is not true that earth is motionless relative to the moon's orbit around it, with the moon alone engaged in orbital movement. Earth and moon each orbit around their common center of gravity (barycenter). Because of this, observers far above the earth-moon system would observe a distinct swirling or curly-cue motion by the earth as earth and moon step through their gravitational dance. Although it is more complex with the sun and the many objects in its grip, the same phenomenon holds. Particularly with regard to the more massive planets, there is a bit of a swirling motion by the sun (admittedly very tiny), and especially when all the massive planets happen to be grouped together.

What evidence led scientists to believe Neptune existed before they ever saw it?

Unexpected changes in the orbit of Uranus led astronomers to believe that there was another planet affecting its orbit. Detailed studies of Uranus's orbit allowed them to predict its existence and location.

How long did it take to find planet Neptune?

The search for Neptune took nearly 40 years from its prediction to its actual discovery in 1846. The planet was first mathematically predicted by Urbain Le Verrier in 1846 based on discrepancies in Uranus's orbit. The discovery was made by German astronomer Johann Gottfried Galle within days of receiving Le Verrier's calculations.

What is Neptune's twin?

Neptune does not have a known twin in our solar system. Its closest "twin" in terms of size and composition would be Uranus, which is a similar ice giant planet.

How long is a decade on Neptune?

One year on Neptune is 164.79 earth years. So, a decade would be ten times as much, or 1647.9 earth years.

What makes up most of the mass in Neptune and Uranus?

Neptune and Uranus are only about 15% hydrogen and helium.

Most of their mass comes from heavier gasses, such as methane, ammonia, and water.

As a result, Neptune and Uranus is much more dense than Jupiter.

~Richard Dunn

What have scientists learned about Neptune?

Neptune was discovered as the result of observed irregularities in the motion of Uranus and was the first planet to be discovered on the basis of theoretical calculations. J. C. Adams of Britain and U. J. Leverrier of France independently predicted the position of Neptune, and it was discovered by J. C. Galle in 1846, the day after he received Leverrier's prediction After noticing an anomaly in the orbit of Uranus, Le Verrier predicted that there may be another undiscovered planet that was pulling Uranus out of it's predicted orbit. He did the mathematical caluclations to make a prediction of where the planet should be seen. Nobody at the University of Paris (where he was studying) wanted to look for the planet, so LV asked d'arrest at the Berlin observatory. D'arrest didn't want to look either but another Berlin astronomer agreed to, his name was Galle. Galle already had a star chart from before and almost immediately found the planet about a degree away from where LV predicted it would be.

The distance in km from any planet to its moon?

The distance from a planet to its moon can vary greatly depending on the specific planet-moon pair. For example, the distance from Earth to its moon is approximately 384,400 km, while the distance from Mars to its moon Phobos is only about 9,378 km. Each planet-moon system has its own unique characteristics that determine the distance between them.

Could people float on Neptune like on the moon?

No. According to the "Neptune Fact Sheet" at:

http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.HTML

the mean density of neptune is 1.638 g/cm3. Since water has a density of ~1.00g/cm3 at room temperature, neptune is more dense than water and hence will not float.

So go ahead and drain the water from your bathtub... it ain't gunna happen.

Who is married to Neptune?

In Roman mythology, Neptune (or Poseidon in Greek mythology) is married to the sea goddess Amphitrite. They are often depicted together in art and mythology as a powerful and royal couple ruling over the seas.

How is the discovery of Neptune important?

The discovery of Neptune was important because it provided evidence for the existence of the outer planets in our solar system. It also demonstrated the power of mathematical predictions in astronomy. Additionally, the discovery of Neptune helped refine our understanding of the mechanics of gravity and planetary motion.

What is the myth of Neptune the planet?

In Roman mythology, Neptune was the god of the sea and water. The planet Neptune is named after this deity due to its beautiful blue color reminiscent of the oceans. However, there is no specific mythological story associated with the planet Neptune itself.

Why is neptune so big?

It isn't.

Neptune is freezing cold. So cold that it's impossible for life to live there. A human astronaut would freeze within seconds of landing on the planet.

Neptune is −218 °C (55.1 K).

If a space ship travels at 200 000 km per hr how long will it take to travel from Earth to Neptune?

Neptune's average distance from the Earth = 4,564,000,000 km

4,564,000,000 ÷ 100,000 = 45,640 hours

45,640 hours = 1901 days and 16 hours

= 5 years, 76 days, and 16 hours

What was the date for operation Neptune?

Operation Neptune involved huge naval forces, including 6939 vessels: 1213 naval combat ships, 4126 landing ships and landing craft, 736 ancillary craft and 864 merchant vessels. Some 195,700 personnel were assigned to Operation Neptune: 52,889 US, 112,824 British, and 4988 from other Allied countries.

What does Neptune was the first planet found by mathematical prediction rather than by empirical observation mean?

Previous planets had been discovered by just happening to see them in the sky. the last of those was the planet Uranus, first identified in 1781. By looking at the orbit of Uranus, astronomers noticed irregularities in it. Because of this they suspected that something was causing a gravitational pull on it. This led them to believe that there might be another planet beyond Uranus that was doing this. So they set about trying to calculate where it was and then to look for it. They had to identify how much of an irregularity there was in the orbit of Uranus, and what size of an object would cause it and how far it would be from Uranus at different times. To make the calculations as to where to find it took many years, before it was finally observed in 1846.

Why cant you see impact craters on Saturn and Neptune?

Saturn and Neptune are gas giants, as is Jupiter, so they do not have a solid surface, so you cannot see any craters on them. What can be seen sometimes is disruptions in the atmosphere, like that which was seen in July 2009 on Jupiter, caused by something crashing into them. As Saturn and Neptune are much farther away than Jupiter, something like that would not be seen on them from Earth without really powerful telescopes.

What are jokes or riddles about Neptune?

Why did Neptune kick Uranus out of the solar system? Because he had a bad atmosphere!

Who predicted Neptune?

The planet Neptune was mathematically predicted by Urbain Le Verrier and John Couch Adams in 1846. They independently calculated the position of an unseen planet based on gravitational disturbances in the orbit of Uranus. This led to the discovery of Neptune.

How would a human being fare rate on the sun?

Not at all, they would die instantly

Jupiter is more massive than all of the other planets put together, it's made mostly of hydrogen. It's gravity would crush you, it's surface would absorb you, it's atmosphere would poison you, and if that weren't enough it's got a storm on it's surface roughly the size of the earth that's been there from centuries and is visible from the surface of the earth.

Can you show a picture of the planet Neptune?

I'm unable to display images. However, you can easily find pictures of the planet Neptune by doing a quick search on the internet. Neptune is a beautiful blue planet with a dynamic atmosphere and faint rings.

How did Neptune die?

Neptune is a planet, not a living entity, so it cannot die. It is one of the gas giants in our solar system and continues to orbit the Sun as normal.