Search results
Results From The WOW.Com Content Network
Illustration of the physical component of Neptune's interior and its surroundings in false colours. The mantle is equivalent to 10 to 15 Earth masses and is rich in water, ammonia and methane. [2] As is customary in planetary science, this mixture is called icy even though it is a hot, dense supercritical fluid.
Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune. [a] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50 × 10 9 km).
According to the IAU's explicit count, there are eight planets in the Solar System; four terrestrial planets (Mercury, Venus, Earth, and Mars) and four giant planets, which can be divided further into two gas giants (Jupiter and Saturn) and two ice giants (Uranus and Neptune). When excluding the Sun, the four giant planets account for more than ...
McMillan and Abelson published their results in a paper entitled Radioactive Element 93 in the Physical Review on May 27, 1940. [67] They did not propose a name for the element in the paper, but they soon decided on the name neptunium since Neptune is the next planet beyond Uranus in our solar system, which uranium is named after.
Galatea / ɡ æ l ə ˈ t iː ə /, also known as Neptune VI, is the fourth-closest inner moon of Neptune, and fifth-largest moon of Neptune. It is named after Galatea , one of the fifty Nereids of Greek legend , with whom Cyclops Polyphemus was vainly in love.
[6] [7]: L23 Following the Voyager 2 spacecraft's flyby of the Neptune system, Triton's physical properties—including its diameter and mass—were measured with precision for the first time, [8]: 1437 thereby allowing researchers to investigate and model Triton's putative capture in greater detail.
Generally, Neptune is depicted as a rich, deep blue. Uranus is usually seen as a pale green or cyan. In fact, however, they are much more similar than we thought. Both planets are a particular ...
Neptune is 30 AU from the Sun and takes 165 years to orbit it, but there are exoplanets that are thousands of AU from their star and take tens of thousands of years to orbit, e.g. GU Piscium b. [1] The radial-velocity and transit methods are most sensitive to planets with small orbits.