Cuáles Son Los Planetas Más Cercanos Al Sol

Introduction

Dark, cold, y whipped through supersonic winds, ice large Neptune is the eighth and most distant planet in our sol system. An ext than 30 times as far from the sol as Earth, Neptune is los only planet in our sol system not mostrar claramente to ns naked eye. In dos mil once Neptune perfect its first 165-year orbit due to the fact that its exploration in 1846.

Estás mirando: Cuáles son los planetas más cercanos al sol

Neptune is for this reason far from the sun that high noon on los big blue planet would seem prefer dim twilight come us. The warm brillante we see right here on our página de inicio planet is roughly 900 times as bright as sunlight on Neptune.

Namesake

Namesake

The ice giant Neptune was the first planet situated through mathematical calculations. Using predictions make by Urbain Le Verrier, Johann Galle discovered the planet in 1846. Los planet is named delaware the roman inn god of los sea, as argued by Le Verrier.

Potential for Life

Potential because that Life

Neptune's setting is not conducive to life together we understand it. The temperatures, pressures, and materials that characterize this world are most likely too extreme and volatile because that organisms to adapt to.

Size y Distance

Size y Distance

With ns radius the 15,299.4 tela (24,622 kilometers), Neptune is about four times wider than Earth. If planet were the size of ns nickel, Neptune would be around as big as uno baseball.

From an average distance the 2.8 billion tela (4.5 exchange rate kilometers), Neptune is 30 astronomical units away from the Sun. One expensive unit (abbreviated as AU), is los distance desde the sun to Earth. From this distance, that takes sunlight cuatro hours come travel from the sun to Neptune.


A 3D modelo of Neptune, an ice huge planet. Credit: atareq.net Visualization technology Applications y Development (VTAD)› Download Options
Orbit y Rotation

Orbit and Rotation

One día on Neptune bring away about 16 hours (the tiempo it takes for Neptune to turn or turn once). And Neptune makes un complete orbit approximately the sol (a year in Neptunian time) in about ciento sesenta y cinco Earth years (60,190 planet days).

Sometimes Neptune is also farther desde the sol than dwarf world Pluto. Pluto's highly eccentric, oval-shaped orbit brings it within Neptune's orbit for a 20-year period every doscientos cuarenta y ocho Earth years. This switch, in i beg your pardon Pluto is closer come the sol than Neptune, happened many recently from mil novecientos setenta y nueve to 1999. Pluto have the right to never crash into Neptune, though, due to the fact that for every tres laps Neptune takes around ns Sun, Pluto renders two. This repeating pattern avoids close approaches of los two bodies.

Neptune’s axis that rotation is tilted 28 degrees with respect to the plane that its orbit around the Sun, i beg your pardon is raza to ns axial tilts of Mars y Earth. This way that Neptune experience seasons as with we perform on Earth; however, since its year is for this reason long, every of los four seasons lasts for over 40 years.

Moons

Moons

Neptune has 14 known moons. Neptune's biggest moon Triton was uncovered on October 10, 1846, by wilhelm Lassell, just diecisiete days after Johann Gottfried Galle discovered ns planet. Because Neptune was called for the Roman god of ns sea, that is moons are named for various lesser ser gods y nymphs in Greek mythology.

Triton is the only huge moon in the sol system the circles its earth in ns direction opposite to los planet's rotation (a retrograde orbit), which argues that it might once have been an elevation object the Neptune captured. Triton is incredibly cold, con surface temperatures about minus 391 degrees Fahrenheit (minus 235 degrees Celsius). And yet, regardless of this deep freeze in ~ Triton, Voyager dos discovered geysers spewing icy cosa upward an ext than 5 miles (8 kilometers). Triton's slim atmosphere, likewise discovered by Voyager, has been detected from Earth several times since, and is growing warmer, however scientists carry out not yet understand why.

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Rings

Rings


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This Voyager dos image, take away in 1989, was the first to admitir Neptune's ring in detail. Credit: atareq.net/JPL

Neptune contends least five main rings y four significant ring arcs that we know of therefore far. Beginning near los planet y moving outward, ns main rings are called Galle, Leverrier, Lassell, Arago, y Adams. Ns rings room thought to be fairly young y short-lived.

Neptune's ring system likewise has extraño clumps of dust called arcs. 4 prominent arcs named liberé (Liberty), Egalité (Equality), Fraternité (Fraternity), y Courage space in ns outermost ring, Adams. The arcs room strange because ns laws of moverse would predict that they would spread out evenly rather than stay clumped together. Scientists currently think ns gravitational effects of Galatea, ns moon simply inward desde the ring, stabilizes these arcs.

Source: U.S. Geology Survey, Gazetteer of Planetary Nomenclature, Planetary Names: Ring y Ring gap Nomenclature, https://planetarynames.wr.usgs.gov/Page/Rings.NameDistance from Planet's CenterRadial Width
Galle~26,000 mil (41,900 kilometers)9.3 tela (15 kilometers)
Leverrier~33,100 tela (53,200 kilometers)9.3 miles (15 kilometers)
Lassell~34,400 mil (55,400 kilometers)-
Arago~35,800 miles (57,600 kilometers)-
Adams~39,100 mil (62,930 kilometers)

Formation

Formation

Neptune took shape when the rest that the solar system formed around 4.5 billion la edad ago as soon as gravity pulled swirling gas and dust in to come to be this ice cream giant. Favor its neighbor Uranus, Neptune likely formed closer to the Sun and moved to the outer sol system about cuatro billion years ago.

Structure

Structure

Neptune is one of dos ice gigantes in ns outer sol system (the various other is Uranus). Most (80% or more) of the planet's mass is consisted of of uno hot dense fluid that "icy" materials – water, methane, y ammonia – above uno small, rocky core. Of los giant planets, Neptune is the densest.

Scientists think there might be an ocean of supervisor hot water debajo Neptune's cold clouds. It does not boil away since incredibly high pressure keeps it locked inside.

Surface

Surface

Neptune does not have a solid surface. Its atmosphere (made up largely of hydrogen, helium, and methane) extend to an excellent depths, slowly merging right into water and other melted ices gastos generales a heavier, heavy core con about the same mass together Earth.

Atmosphere

Atmosphere

Neptune's setting is comprised mostly of hydrogen and helium con just ns little little bit of methane. Neptune's neighbor Uranus is ns blue-green shade due to such atmospheric methane, but Neptune is a more vivid, brighter blue, for this reason there should be an unknown component that causes los more extreme color.

Neptune is our sol system's windiest world. Regardless of its good distance and low power input desde the Sun, Neptune's winds deserve to be numero 3 times more powerful than Jupiter's and nine tiempo stronger than Earth's. This winds whip clouds the frozen methane across ns planet at speeds of more than 1,200 miles per hour (2,000 kilometers período hour). Even Earth's most powerful winds hit only about 250 miles término hour (400 kilometers período hour).

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In 1989 a large, oval-shaped storm in Neptune's southern hemisphere dubbed the "Great Dark Spot" was huge enough come contain ns entire Earth. That storm has since disappeared, but nuevo ones have appeared on different parts of los planet.

Magnetosphere

Magnetosphere

The main axis of Neptune's magnetic campo is tipped over by about cuarenta y siete degrees compared with the planet's rotation axis. Favor Uranus, whose magnetic axis is tilted about 60 degrees representar the axis the rotation, Neptune's magnetosphere experience wild variations throughout each rotation as such misalignment. Ns magnetic field of Neptune is about veintisiete times much more powerful than that of Earth.​