TV News LIES

Tuesday, Sep 30th

Last update06:05:20 AM GMT

You are here News Science Nasa scientists discover planetary system

Nasa scientists discover planetary system

Nasa scientists discover new planetary systemsAstronomers have discovered a planetary system made up of six planets orbiting a Sun-like star that is more than 2,000 light years from Earth. It is the largest number of planets found so far around a single star. More than 100 planets have been seen outside our solar system, but most are Jupiter-like gas giants, and almost all are in single-planet systems.

Jack Lissauer, a scientist at Nasa's Ames research centre in California and a lead author on a paper published tomorrow in the journal Nature, said that the Kepler-11 finding was "the biggest thing in exoplanets since the discovery of 51 Pegasi B, the first exoplanet, back in 1995".

The five inner planets of the Kepler-11 system are between 2.3 and 13.5 times the mass of the Earth, and make their orbits in less than 50 days. All of them are so close to their star that their orbits would fit within that of Mercury in our solar system. The sixth planet has an orbital period of 118 days and sits at a distance from its star that is half the Sun-Earth distance.

Lissauer said it was unexpected to find a system where planets could be so close to one another and there could be so many of them on such a flat plane. "The Kepler-11 system is flatter than a CD," he said. "If placed within our solar system, Kepler-11's six planets would lie between those of the sun's innermost planets, Mercury and Venus."

Astronomers found the planets by analysing data from the Kepler space telescope. Every time a planet passes between its star and an observer, it is said to be transiting; by measuring how often and how much the star dimmed in brightness as planets crossed in front of it, they were able to measure the size and density of the planets.

To calculate masses, astronomers measured the slight variations in the orbital periods of the planets caused by gravitational interactions among them.

More...


Most Recent Related Stories...


Stephen Hawking admits he is an atheist

Stephen HawkingAstrophysicist Stephen Hawking doesn't believe in God, but does believe aliens and space travel are the...

New dinosaur species with giant nose discovered in Utah

New dinosaur As researchers from North Carolina State University and Brigham Young University have discovered, the largest aquiline...

NASA's Maven explorer arrives at Mars after year

Maven reaches MarsNASA's Maven spacecraft arrived at Mars late Sunday after a 442 million-mile journey that began nearly...

Supermassive Black Hole Discovered Inside Tiny Dwarf Galaxy

black hole"It is the smallest and lightest object that we know of that has a supermassive black...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!