Encyclopedia - 90482 Orcus: Encyclopedia - 90482 Orcus
90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael Brown ...   » Read the article

Encyclopedia - 1 Ceres: Encyclopedia - 1 Ceres
1 Ceres ([ˈsi.riz], Latin CerÄ“s) was the first asteroid to be discovered. It was discovered on January 1, 1801, by Giuseppe Piazzi. Wit...   » Read the article

Encyclopedia - Chad Trujillo: Encyclopedia - Chad Trujillo
Chadwick A. "Chad" Trujillo (born November 22, 1973), is the co-discoverer of 2003 UB313, which he claims to be the Tenth Planet. Trujill...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia - 23rd Century
The 23rd century (Gregorian Calendar) comprises the years 2201-2300. 23rd century - Astronomical predictions for the 23rd century. In t...   » Read the article

Encyclopedia - Pluto: Encyclopedia - Pluto
Pluto is the ninth planet in the solar system. Discovered in 1930 and immediately classified as a planet, its status is currently under d...   » Read the article

Encyclopedia - Planet: Encyclopedia - Planet
A planet is generally considered to be a relatively large mass of accreted matter in orbit around a star that is not a star itself. The n...   » Read the article

Encyclopedia - David L. Rabinowitz: Encyclopedia - David L. Rabinowitz
David Lincoln Rabinowitz (born 1960) is a researcher at Yale University studying the Kuiper belt and the outer solar system. Along with M...   » Read the article

Encyclopedia - 2003 El61: Encyclopedia - 2003 El61
2003 EL61 (also written 2003 EL61), nicknamed "Santa" (non-official designation), is a very large and unusual Kuiper belt object recently...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia - 2003 Ub313
2003 UB313 (center) and moon (right of center). Keck Observatory. 2003 UB313 is a trans-Neptunian object (TNO) which California astronome...   » Read the article

Encyclopedia - Natural Satellite: Encyclopedia Ii - Natural Satellite - Orbital Characteristics
Most moons in the solar system are tidally locked to their primaries, meaning that one side of the moon is always turned toward the plane...   » Read the article

Encyclopedia - Planet: Encyclopedia Ii - Planet - Definition And Classification Of Planets
Much like "continent", "planet" is a word without a precise definition, with history and culture playing as much of a role as geology and...   » Read the article

Encyclopedia - 2003 El61: Encyclopedia Ii - 2003 El61 - Discovery Controversy
José Luis Ortiz Moreno, an astronomer at the Sierra Nevada Observatory in Spain, and colleagues Francisco José Aceituno Castro and Pabl...   » Read the article

Encyclopedia - Chad Trujillo: Encyclopedia Ii - Chad Trujillo - Early Career
Trujillo was a postdoctoral scholar at Caltech, and is currently an astronomer at the Gemini Observatory in Hawaii [1]. He studies the Ku...   » Read the article

Encyclopedia - February 2004: Encyclopedia Ii - February 2004 - Events
Ongoing events Haiti Rebellion Bloody Sunday Inquiry Exploration of Mars: Rovers Bird flu Israeli-Palestinian conflict Same-sex marriage ...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Discovery
2003 UB313 was discovered by the team of Michael Brown, Chad Trujillo, and David Rabinowitz on January 5, 2005 from images taken on Octob...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Science Fiction Set In The 23rd Century
23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Science Fiction Set In The 23rd Century
23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Science Fiction Set In The 23rd Century
23rd century - Literature. The Fortunate Fall, a novel by Raphael Carter The Glass Bead Game, a novel by Hermann Hesse Satellite Night...   » Read the article

Encyclopedia - 1 Ceres: Encyclopedia Ii - 1 Ceres - Discovery
Ceres was discovered by accident. Piazzi was searching for a star listed by Francis Wollaston as Mayer 87 because it was not in Mayer's z...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - The Pluto Debate
Pluto - Planet X?. The planet Pluto was originally discovered in 1930 in the course of a search for a body sufficiently massive to acco...   » Read the article

Encyclopedia - Planet: Encyclopedia Ii - Planet - Within Our Solar System
Main article: Solar system The process of naming planets and their features is known as planetary nomenclature. All the currently accepte...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Religious Predictions
According to the Talmud, the world will end in the year 2240. If the Jewish account of Creation is true and the world was created in 3761...   » Read the article

Encyclopedia - Natural Satellite: Encyclopedia Ii - Natural Satellite - Moons Of The Solar System
The largest moons in the solar system (those bigger than about 3000 km across) are Earth's Moon, Jupiter's Galilean moons Io, Europa, Gan...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - Pluto's Moons
Pluto has three known natural satellites: Charon, first identified in 1978, and two smaller, as yet unnamed moons discovered in 2005. Pl...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Name
The object currently has the provisional designation 2003 UB313, granted automatically according to the IAU's naming protocols for minor ...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - Physical Characteristics
More than 75 years after its discovery, many facts about Pluto remain unknown, mainly due to the fact that it is the only planet that has...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - Exploration Of Pluto
Little is known about Pluto because of its great distance from Earth and because no exploratory spacecraft have visited Pluto yet. The Vo...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - Orbit
Pluto's orbit is unlike those of the other planets. It is highly inclined above the plane of the ecliptic, and highly eccentric (non-circ...   » Read the article

Encyclopedia - Pluto: Encyclopedia Ii - Pluto - Discovery And Naming
Pluto was discovered by the astronomer Clyde Tombaugh at the Lowell Observatory in Arizona on February 18, 1930 after an extensive search...   » Read the article

Encyclopedia - Planet: Encyclopedia Ii - Planet - Planetary Formation
It is not known with certainty how planets are formed. The prevailing theory is that they are formed from those remnants of a nebula that...   » Read the article

Encyclopedia - Planet: Encyclopedia Ii - Planet - Extrasolar Planets
Of the 173 extrasolar planets (those outside our solar system) discovered to date (October 2005) most have masses which are about the sam...   » Read the article

Encyclopedia - 1 Ceres: Encyclopedia Ii - 1 Ceres - Name
Ceres was originally named Ceres Ferdinandea after both the mythological figure Ceres (Roman goddess of plants and motherly love) and Kin...   » Read the article

Encyclopedia - 1 Ceres: Encyclopedia Ii - 1 Ceres - Physical Characteristics
Ceres is the largest known asteroid in the asteroid belt, which mostly lies between Mars and Jupiter. However the Kuiper belt is known to...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Surface
The discovery team followed up their initial identification of 2003 UB313 with spectroscopic observations made at the 8 m Gemini North Te...   » Read the article

Encyclopedia - 2003 El61: Encyclopedia Ii - 2003 El61 - Size And Composition
The total mass of the 2003 EL61 system can be determined from the orbits of its satellites by Kepler's third law. It turns out to be 4.2Ã...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Quincentennials
The 23rd century will see some very important quincentennials, or 500th anniversaries. These will include: 2256: Birth of Wolfgang Mozar...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Size
The brightness of a solar system object depends both on its size and the amount of light it reflects (its albedo). If the distance to an ...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Orbit
2003 UB313 has an orbital period of 557 years, and currently lies at almost its maximum possible distance from the Sun (aphelion). It is ...   » Read the article

Encyclopedia - 1 Ceres: Encyclopedia Ii - 1 Ceres - Observations
Some notable observation milestones for Ceres include: An occultation of a star by Ceres was observed in Mexico, Florida and across the C...   » Read the article

Encyclopedia - 2003 Ub313: Encyclopedia Ii - 2003 Ub313 - Classification
2003 UB313 is classified as a scattered disk object (SDO), a category of TNO which are believed to have been "scattered" from the Kuiper ...   » Read the article

Encyclopedia - 23rd Century: Encyclopedia Ii - 23rd Century - Religious Predictions
According to the Talmud, the world will end in the year 2240. If the Jewish account of Creation is true and the world was created in 3761...   » Read the article