0 - 20 años luz
Esta base de datos de estrellas y planetas está en constante evolución y expansión a medida que hay nuevos datos astronómicos disponibles.
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Neptune Location in the Milky Way Galaxy
Local Fluff of Local Bubble
Galactic Orion Arm Spur
26,000 LY from Galactic Center
Neptune is 4 Light Hours and 18 Light Minutes Away from Earth
Ice Giant Planet Class
Sol
1 estrella
17.148 Earth Mass
Sol
73,102 Miles
Tidally Locked
0.00000000002 (EM)
Asteroidan
261 Miles
1.30 Density
0.007 g
No Atmosphere
Frozen
No Life
-353 F Average Temp (Frozen)
Toxic Atmosphere
30,598 Mile Diameter
1.638 Density
1.14 g
Sol
220,500 Miles
Tidally Locked
0.00359 (EM)
Plutonian
1,682 Miles
2.06 Density
0.08 g
Toxic Atmosphere
Frozen
No LIfe
Sol
3,425,900 Miles
Not Locked
Asteroidan
0.00000000001 (EM)
210 Miles
1.50 Density
0.0076 g
No Atmosphere
Frozen
No Life
Note: Only the largest Moons of Neptune are displayed. Neptune has 16 moons.
Neptune Tilt Relative to the Plane of Solar System
Neptune Axial Tilt
28.32°
Sol
Neptune Seasons
Spring
Summer
Fall
Winter
Sol
Molecular Hydrogen
80%
Helium
18.5%
Methane
1.5%
0.1 to 3.5 Bar Atmospheric Pressure in Upper Clouds
50 to 75 Bar Atmospheric Pressure in Lower Troposphere
5 Million Bar Atmospheric Pressure in Deep Interior
10 Million Bar Atmospheric Pressure at Diffused Core
Neptune's Atmospheric Pressure is Not a Single Value Since it Has No Solid Surface
Neptune Weather
Clouds
Hydrocarbon Haze and Methane Ice Crystals
in Upper Clouds
Ammonium Hydrosulfide
in Intermediate Clouds
Water Ice and
Hydrogen Sulfide
in Lower Clouds
Wind
200 to 1,500
Miles per Hour
Rain
Rains Diamonds
Lightning
Same Intensity and Power as Earth Lightning
Neptune Surface and Internal Composition
Crust
No Crust
Gaseous Clouds of
Hydrogen, Helium, and Methane
Mantle
Molecular
Hydrogen Ice
Upper Mantle
Ocean of Metallic Liquid Carbon
Lower Mantle
Outer Core
Dense
Water and Ammonia Fluid Ice Ocean
Inner Core
Solid Iron
Solid Nickel
Rock Silicates
Surface Liquid
None
Surface Ice
None
Sub-Surface Liquid
Water and Ammonia
Sub-Surface Ice
Hydrogen Ice
Neptune Magnetic Radiation Shield
0.1 to 1.0 Gauss Magnetic Field Strength
Caused by Movement of Liquid Metal in Earth's Outer Core and Earth's Rapid Rotation
Neptune Similarity to Earth
21%
Sol
Neptune Alien Life Chance
1.4%
Sol
Chemical Rocket Travel Time
19.71 Earth Years
Fission Rocket Travel Time
3.28 Earth Years
Fusion Rocket Travel Time
1.64 Earth Years
Laser Light Sail Travel Time
10 Months
Top 5 Most Asked Questions About the Planet Neptune (Answered Simply)
Could life exist on Neptune?
Life as we know it is extremely unlikely to exist on Neptune. The planet has no solid surface, temperatures in its upper atmosphere can drop to around -200° C or -328° F, and its atmosphere is made mostly of hydrogen, helium, and methane. Neptune also experiences crushing pressures deep inside the planet and some of the fastest winds in the Solar System, creating a very harsh environment for life similar to Earth’s.
However, scientists do not completely rule out the possibility of exotic microbial life in places we do not yet fully understand, such as deeper atmospheric layers where temperatures and pressures may be more moderate, or in hidden liquid water rich regions deep within the planet. While there is currently no evidence of life on Neptune, studying extreme environments on Earth continues to expand what scientists think might be possible elsewhere in the universe.
What is Neptune made of?
Neptune is made mostly of hydrogen, helium, and methane gas in its outer atmosphere. The methane is especially important because it absorbs red light and reflects blue light, which is why Neptune appears as a deep blue planet when viewed from space. Beneath its atmosphere, Neptune has a thick layer of superheated water, ammonia, and methane “ices,” which is why scientists classify it as an ice giant rather than a gas giant.
Deep inside, Neptune is believed to have a small rocky core made of silicate rock, metals, and other heavy elements. This layered structure, gas on the outside, icy materials in the middle, and rock at the center, makes Neptune one of the most fascinating and unusual planets in our Solar System.
How cold is Neptune?
Neptune is one of the coldest planets in the Solar System, with average temperatures in its upper atmosphere around -214° C or -353° F. Because Neptune is the farthest major planet from the Sun, it receives very little sunlight, making its outer atmosphere incredibly cold and dark.
Surprisingly, Neptune still gives off more internal heat than it receives from the Sun, which helps power its extreme weather, including the fastest winds in the Solar System. So while Neptune is freezing cold on the outside, deep inside the planet temperatures and pressures rise dramatically, creating a much hotter interior.
How many moons does Neptune have?
Neptune has 14 known moons. The largest and most famous is Triton, which is unusual because it orbits Neptune backward compared to the planet’s rotation. Scientists believe Triton may have been a captured object from the distant outer Solar System, making it one of the most interesting moons in our planetary neighborhood.
Most of Neptune’s other moons are much smaller and irregularly shaped, likely captured by Neptune’s gravity long ago. These moons vary widely in size and orbit, helping scientists learn more about Neptune’s history, how its moon system formed, and what conditions are like in the far outer Solar System.
Why is Neptune blue?
Neptune looks blue because methane gas in its atmosphere absorbs red light from the Sun and reflects blue light back into space. This filtering effect gives Neptune its rich blue color when seen by telescopes and spacecraft. The same process also helps give Uranus its blue-green appearance.
Scientists think Neptune’s deeper, darker blue color may be caused by more than methane alone. Recent research suggests there may also be a layer of haze or atmospheric particles that changes how light is scattered, making Neptune appear even more vivid blue than Uranus. This combination gives Neptune one of the most striking colors in the Solar System.
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