Comet Collisions Every Six Seconds Explain 17-Year-Old Stellar Mystery

For millions of years ScienceDaily (8 November, 2012) - Every six comets have been invited to star in the constellation Cetus 49 CETI, which appears near naked eye with each other colliding.
During the last three decades, astronomers have discovered hundreds of disks of dust around stars, but only two - 49 CETI is one - has been found that large amounts of gas in the circuit.
Young stars, a million years old, orbiting disk of dust and gas, but the gas within a few million years and almost always goes to dissipate within about 10 million years. But 49 CETI, which is considered adequate if older, still being a great quantity of carbon monoxide molecules in the gas orbited, after long must the gas dissipated.
"We believe that now 49 CETI 40 million years old, and mystery how the world is an otherwise normal star that is older than the surrounding gas can be there," Benjamin Zuckerman, UCLA Professor of Physics and Astronomy and the research, which was recently published in the Astrophysical Journal, co-author. "This is the oldest star that we know of with enough gas."
Zuckerman and his co-author Inseok Song, University of Georgia assistant professor of physics and astronomy suggest that the Sun's Kuiper Belt is a mysterious gas 49 CETI, which is located outside is like a very large scale around disk-shaped area is on the orbit of Neptune.
Including the dwarf planet Pluto Kuiper belt objects are different, making a tenth of the total land mass is a large scale. But when the earth was formed, astronomers say, the Kuiper belt mass is expected to be about 40 times larger than the earth, most of the initial mass is lost in the past 4.5 billion years.
4,000 times the mass of the Kuiper belt - on the contrary, the Kuiper belt analogue class now around 49 CETI 400 is the land mass of the people.
"Comets orbit the star 49 CETI and the age is estimated around 30 million years hundreds of trillions of trillions of comets, Imagine the size of the UCLA campus - 49 CETI around the circle - about 1 mile in diameter by Zuckerman I asked another bashing, ". The possibility that young comet comets in our solar system generally contains more carbon monoxide to carbon monoxide when they collide, escapes as a gas, gas seen around these two stars the incredible number of collisions between comets is the result. Is.
Zuckerman Sierra Nevada mountains of southern Spain and two colleagues in 1995 using a radio telescope, discovered gas 49 CETI classes, but actual gas for 17 years was unknown until now.