It is 3.67 billion miles from the Sun.(2) How long does it take for Pluto to go around the Sun?Ittakes 248 years for Pluto to go the Sun(3) Who discovered Pluto?Clyde Tombaugh discovered Pluto.(4)When was Pluto discovered?It was discovered in 1930.(5) Who has more moons going ...
译文示例:There may be a billion periodic comets, most of which are orbiting beyond the outermost planets Neptune and Pluto, billions of miles from the sun. ↔ Mety hisy kintana manan-drambo arivo tapitrisa manao fihodinkodinana fohy, ka ny maro aminy dia mihodidina any ankoatra an’i...
1.Roman MythologyThe god of the dead and the ruler of the underworld, identified with the Greek Hades. 2.A dwarf planet having a sidereal period of revolution about the sun of 248.5 years, a highly elliptical orbit with a perihelion distance of 4.4 billion kilometers (2.8 billion miles) an...
a dwarf planet in the Earth's solar system with a highly elliptical orbit and a diameter of 2,370 kilometers, or approximately 1,475 miles. Pluto was formerly considered a planet in the solar system, the smallest and farthest from the sun, but it was reclassified in 2006 as a dwarf. ...
is relatively small: approximately a fifth the mass of the Earth's Moon and a third its volume. It has an eccentric and highly inclined orbit that takes it from 30 to 49 AU (4.4–7.4 billion km) from the Sun. This causes Pluto periodically to come closer to the Sun ...
the ninth planet from the sun in the solar system; its astronomical sign is FE. Pluto was discovered in 1930 by the amateur astronomer C. Tombaugh in photographs taken at an observatory in Flagstaff, Ariz., as a star of the 15th stellar magnitude moving among the other stars. Tombaugh was...
a dwarf planet having an equatorial diameter of about 2,100 miles (3,300 km), a mean distance from the sun of 3.674 billion miles (5.914 billion km), a period of revolution of 248.53 years, and one known moon, Charon. Based on the definition of a planet devised by the International ...
Pluto’s mean distance from theSun, about 5.9 billion km (3.7 billion miles or 39.5astronomical units), gives it an orbit larger than that of the outermostplanet,Neptune. (One astronomical unit [AU] is the average distance fromEarthto the Sun—about 150 million km [93 million miles].) It...
2008 the IAU created a new category,plutoids, within the dwarf planet category. Plutoids are dwarf planets that are farther from the Sun thanNeptune. All the dwarf planets except Ceres are plutoids; because of its location in the asteroid belt, Ceres is not. For a discussion of the ...
Since Pluto is so far from Earth, little was known about the dwarf planet's size or surface conditions until 2015, when NASA's New Horizons space probe made a close flyby of Pluto. New Horizons showed that Pluto has a diameter of 1,473 miles (2,370 km), less than one-fifth the di...