The article explores whether large planets exist in the Kuiper belt. It describes Kuiper belt as a region of icy bodies beyond Neptune that measures at least several thousands astronomical units (a.u....
Are there planets in the Kuiper belt? Does the Kuiper belt have an atmosphere? Is the Kuiper belt in the Milky Way? Are there dwarf planets in the Kuiper belt? Are terrestrial planets inside the asteroid belt? Is Neptune a Jovian planet? Does Pluto orbit near the Kuiper belt? Is Pluto ...
Planet Nine is a hypothetical large planet in the far outer Solar System, the gravitational effects of which would explain the improbable orbital configuration of a group of trans-Neptunian objects (TNOs) that orbit mostly beyond the Kuiper belt. In a 2014 letter to the journal Nature, astronome...
Their analysis of objects orbiting in the Kuiper Belt(柯伊伯带), a ring of frozen asteroids(小行星) that circle beyond the orbit of Neptune (and of which Pluto is now regarded as the largest member), suggests to them that something about ten times as massive as Earth has changed those ...
Far beyond the Kuiper Belt lies the hypothetical Oort Cloud, a spherical shell of icy objects believed to surround the solar system at distances up to100,000 AU. Though we've never directly observed it, the Oort Cloud is thought to be the source of long-period comets that take thousands ...
Why are planets beyond Neptune not gas planets? How did comets come to exist in the Kuiper belt? Why are most extrasolar planetary systems so different than ours? Why do asteroid impacts create such large craters? Why do terrestrial planets have thin atmospheres?
Nearly eight years after its historic Pluto flyby, NASA’sNew Horizons probeis getting ready for another round of observations made from the icy edge of the solar system — and this time, its field of view will range from Uranus and Neptune to the cosmic background far beyond our galaxy. ...
That last one is what got Pluto downgraded from 9th planet to the same category as Eris, Makemake, Ceres,Haumeaand Orcus: dwarf planet. Beyond Our Solar System Past Neptune's orbit lies theKuiper Belt, which contains icy bodies like Pluto and other Kuiper Belt objects. The solar system exte...
There are (at least) three theories for the origin of water on a dry world – in situ, inward motion of the water snowline, and dynamical supply from beyond the ice line – and here we evaluate them in light of the Earth’s isotopic enrichment patterns: 1. In Situ: In general, it ...
Today the amount of information on the motions, properties, and compositions of the planets and smaller bodies has grown to immense proportions, and the range of observational instruments has extended far beyond the solar system to other galaxies and the edge of the known universe. Yet the solar...