In Depth | Neptune – NASA Solar System Exploration
Dark, cold, and whipped by supersonic winds, ice giant Neptune is the eighth and most distant planet in our solar system. More than 30 times as far from the Sun as Earth, Neptune is the only planet in our solar system not visible to the naked eye.
10 Need-to-Know Things About Neptune - NASA Solar System …
Neptune is an ice giant. Most of its mass is a hot, dense fluid of "icy" materials – water, methane and ammonia – above a small rocky core.
Neptune By the Numbers – NASA Solar System Exploration
5 天之前 · Neptune is the eighth and most distant planet from the Sun. It’s the fourth largest, and the first planet discovered with math.
Planet Compare – NASA Solar System Exploration
5 天之前 · NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Neptune - NASA Solar System Exploration
NASA’s real-time science encyclopedia of deep space exploration. Our scientists and far-ranging robots explore the wild frontiers of our solar system.
Recipe for Neptune Revealed by Scientists - NASA Solar System …
2000年10月26日 · Scientists would expect Neptune to be only about 46.6 Kelvins (-375 degrees Fahrenheit), if its only source of heat were sunlight. According to Orton, it can be deduced from this that Neptune must have an internal heat source.
In Depth | Triton – NASA Solar System Exploration
Triton is the largest of Neptune's 13 moons. It is unusual because it is the only large moon in our solar system that orbits in the opposite direction of its planet's rotation―a retrograde orbit. Scientists think Triton is a Kuiper Belt Object captured by Neptune's gravity millions of years ago.
Why Uranus and Neptune Are Different Colors - NASA Solar …
2022年5月31日 · Neptune and Uranus have much in common — they have similar masses, sizes, and atmospheric compositions — yet their appearances are notably different. At visible wavelengths Neptune has a distinctly bluer color whereas Uranus is a pale shade of cyan. Astronomers now have an explanation for why the two planets are different colors.
In Depth | Uranus – NASA Solar System Exploration
Uranus is one of two ice giants in the outer solar system (the other is Neptune). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small rocky core.
The Atmospheres of the Ice Giants, Uranus and Neptune
5 天之前 · We believe many important atmospheric science questions can only be addressed by studies of the ice giants Uranus and Neptune. These questions relate to fundamental atmospheric processes that help us understand the formation, evolution, and current structure of all planets.