2.the planet ninth in order from the sun, having an equatorial diameter of about 1400 mi. (2250 km), a mean distance from the sun of 3.674 billion mi. (5.914 billion km), a period of revolution of 248.53 years, and one known moon. ...
The Kuiper belt stretches beyond the orbit of Neptune to an orbital distance of about 50 astronomical units from the Sun. The known objects in the Kuiper b... Stern,A S. 被引量: 0发表: 2007年 ALICE: The Ultraviolet Imaging Spectrograph aboard the New Horizons Pluto-Kuiper Belt Mission The...
Pluto was discovered in 1930 and hasn’t completed an orbit around the sun since then. The dwarf planet is so far away from our star that an orbit will take it 248 years. Pluto has five known moons: Charon (the largest, with a diameter just over half that of Pluto), Styx, Nix, ...
Its large 1 km 3 siz... - 《New Astronomy Reviews》 被引量: 40发表: 2004年 Very high-energy neutrinos from the Sun We argue here that the Sun is a bright point source of very high energy (VHE) neutrinos, which are produced by the interactions of cosmic rays with solar m... IV ...
Saturn, Sixth Planet from the Sun The Voyager 1 and 2 Space Missions Uranus, Seventh Planet from the Sun Venus, Second Planet from the Sun Phobias, Fears, and Manias Polygamy, Polyandry, and Polygyny Portmanteaus, Etymology and Examples ...
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 smallest planet and the farthest known from the sun. Discovered in 1930 by Clyde Tombaugh (1906--97), it has one known satellite, Charon. Mean distance from sun: 5907 million km; period of revolution around sun: 248.6 years; period of axial rotation: 6.4 days; diameter and mass: 18...
Pluto is bigger than Eris, another big Kuiper Belt object discovered in 2005 by Mike Brown of Caltech, which is much further out from the Sun than Pluto. The discovery of Eris further fueled the controversial debate about the status of Pluto’s planethood. ...
The occultation lightcurve, which probed two regions on the sunrise limb separated by about 200 km, reveals a clear upper atmosphere that overlies an extinction layer with an abrupt upper boundary. The observations demonstrate that the extinction layer extends along the portion of the sunrise ...
Even though Pluto is extremely far away from the sun, its surface shows movement of ice, which might indicate the existence of liquid water, meaning subsistence of some kind of life. View chapterExplore book Pluto S. AlanStern, inEncyclopedia of the Solar System (Second Edition), 2007 ...