Quantcast

Latest Eris Stories

2006-08-22 09:30:00

By Alan Crosby PRAGUE -- In coming up with the definition of a planet, astronomers hoped to bring order to the way we look at solar systems. Instead, they created a big bang of their own. A committee formed by the International Astronomers Union (IAU) has proposed that to be called a planet, a celestial body must be in orbit around a star while not itself being a star. It also must be large enough in mass for its own gravity to pull it into a nearly spherical shape. The new definition -- the...

217ca4d37b72b5c519bd5ab3aad4957a1
2006-08-19 15:05:00

PASADENA, Calif. -- Few planet hunters stand to gain as much as Michael Brown if our solar system balloons to 12 planets under a new definition. He's spotted more than a dozen objects that might qualify as planets. So why is he upset? "When I was a kid, planets were special," he said. "This definition takes the magic out of the solar system." It was Brown's discovery of an icy rock bigger than Pluto that helped lead astronomers to rethink their definition of what a planet is. But Brown...

2006-08-16 13:25:00

By Alan Crosby PRAGUE -- Learning the planets of our solar system is about to become more difficult for school children around the world. The International Astronomers Union (IAU) put forward a definition of a planet on Wednesday that will expand the number from nine to 12, and create different categories of planets in a nod to technological advances that allow astronomers to look deeper into space. In defining for the first time what exactly a planet is, a seven member committee of the IAU...

2006-08-16 13:27:18

By Alan Crosby PRAGUE (Reuters) - The question of whether Pluto is a real planet, hotly debated by scientists for decades, came to a head on Wednesday when the global astronomers' body proposed a definition of a planet that raises their number to 12 from nine. The definition set out by a committee of the International Astronomers Union (IAU) answers the key question: How small can a body be and still be called a planet? in a way that leaves Pluto's status intact -- but modified....

3b8f5f66934cb1d2c88609601f22f3a41
2006-08-16 06:55:00

PRAGUE, Czech Republic -- The universe really is expanding - astronomers are proposing to rewrite the textbooks to say that our solar system has 12 planets rather than the nine memorized by generations of schoolchildren. Much-maligned Pluto would remain a planet - and its largest moon plus two other heavenly bodies would join Earth's neighborhood - under a draft resolution to be formally presented Wednesday to the International Astronomical Union, the arbiter of what is and isn't a planet....

b938015b00f4a33149aed66ca739e7791
2006-08-15 07:50:00

PRAGUE, Czech Republic -- Scientists have to agree on a universal definition for what qualifies as a planet, the head of a global astronomy organization said Tuesday, as scientists debate the future designation of Pluto. "People have to be able to agree on a terminology that's used to describe things in the universe," Ronald D. Ekers, president of the International Astronomical Union, told reporters in Prague. "We don't want an American version, a European version and a Japanese version."...

2006-08-13 11:55:53

By Alan Crosby PRAGUE (Reuters) - Despite being the farthest planet from Earth in our solar system, Pluto has come under attack from astronomers and may be about to lose its status in the battle. Some 3,000 astronomers and scientists from around the world will meet in Prague this week to decide whether Pluto, discovered in 1930, measures up to the definition of a planet. In defining for the first time what exactly a planet is, the International Astronomers Union (IAU) may be forced...

2006-08-13 11:55:00

By Alan Crosby PRAGUE -- Despite being the farthest planet from Earth in our solar system, Pluto has come under attack from astronomers and may be about to lose its status in the battle. Some 3,000 astronomers and scientists from around the world will meet in Prague this week to decide whether Pluto, discovered in 1930, measures up to the definition of a planet. In defining for the first time what exactly a planet is, the International Astronomers Union (IAU) may be forced to downgrade...

7b715d621fccc8272ae549d445c0fd731
2006-04-11 12:50:00

NASA's Hubble Space Telescope has resolved the "tenth planet," nicknamed "Xena" for the first time, and has found that it is only just a little larger than Pluto. Though previous ground-based observations suggested that Xena was about 30 percent greater in diameter than Pluto, Hubble observations taken on Dec. 9 and 10, 2005, yield a diameter of 1,490 miles (with an uncertainty of 60 miles) for Xena. Pluto's diameter, as measured by Hubble, is 1,422 miles. "Hubble is the only telescope...

2006-02-02 00:30:00

By Patricia Reaney LONDON (Reuters) - A distant object discovered in space last year which could be the 10th planet in our solar system is around a third bigger than Pluto, German astrophysicists said on Wednesday. They determined the diameter of the potential new planet, known as 2003 UB313, by measuring its thermal emission. "We actually measured the size of UB313 which was not known prior to these observations," Professor Frank Bertoldi, of the University of Bonn and the Max Planck...


Latest Eris Reference Libraries

4_fa986c4947be6caa1fdc9a322408b0882
2004-10-19 04:45:41

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...

4_f6c7da539e4ce5858ae8aafa252e5d7e2
2004-10-19 04:45:41

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...

4_d525afa47eb1598771cf4d0a9855c4d32
2004-10-19 04:45:41

Planet Pluto -- Pluto is the ninth and smallest planet of our solar system. It was discovered by the astronomer Clyde Tombaugh at the Lowell Observatory in Arizona on February 18, 1930 (although the body was first photographed on March 19, 1915). Tombaugh was searching for a "Planet X" to explain the orbit of Neptune; further analysis, with seven decades more data about Neptune's position, has resolved the perceived anomaly without need for an additional gravitational pull on Neptune....

More Articles (3 articles) »
Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.