Latest Trans-Neptunian object Stories
The European Southern Observatory announced on Wednesday that astronomers have accurately measured the diameter of the dwarf planet Eris for the first time.
The 1,000 objects so far directly imaged in the Kuiper Belt â€“ that swath of icy bodies circling around the sun with Pluto â€“ appear to be a wide range of colors: red, blue, and white.
Beyond the orbit of Neptune reside countless icy rocks known as trans-Neptunian objects (TNOs).
Until now, astronomers have used telescopes to find Kuiper Belt objects (KBOs), moon-sized bodies, and obtain their spectra to determine what types of ices are on their surface.
Pluto and its dwarf planet brethren have a new friend. The International Astronomical Union (IAU) announced the name of a new dwarf planet to join the existing four in the solar system. The object previously known as 2003 EL61 is now named Haumea, after the goddess of childbirth and fertility in Hawaiian mythology. The name was decided by members of the International Astronomical Union's Committee on Small Body Nomenclature and the IAU Working Group for Planetary System...
An international team of scientists that includes University of British Columbia astronomer Brett Gladman has found an unusual object whose backward and tilted orbit around the Sun may clarify the origins of certain comets.
According to the International Astronomical Union, a dwarf planet beyond Neptune has been given the name Makemake, and has been designated the third plutoid in the solar system.
By Deborah Zabarenko WASHINGTON (Reuters) - Xena, the possible 10th planet in our solar system, has its own moon, a dim little satellite called Gabrielle, its discoverers reported.
When the distant planetoid Sedna was discovered on the outer edges of our solar system, it posed a puzzle to scientists. Sedna appeared to be spinning very slowly compared to most solar system objects, completing one rotation every 20 days.
Counting down the top ten astrobiology stories for 2004 highlights the accomplishments of those exploring Mars, Saturn, comets, and planets beyond Pluto. Number six in this countdown was the discovery of potential heat sources for ice beyond Pluto, an important finding if water is considered the key ingredient to understanding biological probabilities elsewhere in the solar system.
Quaoar -- Quaoar ("kwah-oh-ahr", /kwA o Ar/) is a Trans-Neptunian object circling the Sun in the Kuiper belt, discovered in 2002 by astronomers Chad Trujillo and Mike Brown at the California Institute of Technology in Pasadena, California. Quaoar is estimated to have a diameter of about 1,280 kilometres, which would make it the largest Solar System object discovered since Pluto and, indeed, the largest known minor planet. Larger than all the asteroids put together, it is about one...
Planet Charon -- Charon is the only known satellite of Pluto. Charon was discovered by astronomer James Christy in 1978 using photographic plates which showed a bulge moving around Pluto. Christy named it after the Greek mythological figure Charon but pronounced it differently. The "ch" at the beginning of the moon's name is soft so it sounds like "Sharon," after the astronomer's wife Charlene, nicknamed Char, which both have soft ch sounds. The mythological figure's name is...
- Sleep; the state or condition of being asleep.