Lots more planets found outside solar system
By SETH BORENSTEIN, AP
WASHINGTON — Astronomers have found 32 new planets outside our solar system, adding evidence to the theory that the universe has many places where life could develop.
Scientists using European Southern Observatory telescopes didn't find any planets quite the size of Earth or any that seemed habitable or even unusual. But their announcement increased the number of planets discovered outside the solar system to more than 400.
Six of the newly found planets are several times bigger than Earth, increasing the population of so-called SuperEarths by more than 30 percent. Most planets discovered so far are far bigger, Jupiter-sized or even larger.
Two of the newly discovered planets were as small as five times the size of Earth and one was up to five times larger than Jupiter.
Astronomer Stephane Udry of the University of Geneva said the results support the theory that planet-formation is common, especially with certain type of common stars.
"I'm pretty confident that there are Earth-like planets everywhere," Udry said in a Web-based news conference from a conference in Portugal. "Nature doesn't like a vacuum. If there is space to put a planet there, there will be a planet there."
What astronomers said is especially exciting is the high percentage — about half — of a type of star systems with relatively light stars that had planets around them. This is more than planet-formation theory expected, astronomers said. Two of the four planets found around these type stars were relatively close to Earth size, said astronomer Xavier Bonfils of Grenoble Observatory in France.
The discoveries were made by the High Accuracy Radial Velocity Planet Searcher, which looks for slight wobbles in a star's movements, which would be made by the tug of a planet's gravity on the star. There are no photos of these planets.
Gizmodo - By Jack Loftus
Nasa IBEX Probe to Go Where Only
On October 19, NASA will launch the IBEX, or Interstellar Boundary Explorer, into a 130 mile earth orbit to begin mapping the very edge of our solar system. This region of space, also known by the kick ass scientific name "termination shock," is rife with mystery. Only the Voyager 1 and 2 spacecraft have ventured there, but they weren't armed with the right kind of tech to adequately catalog what's going on at the point where our solar system meets outer space. IBEX is, and from its orbit around our planet it will beam back some of the first detailed measurements of the region.
Unlike Voyager, IBEX's payload includes tech tailor made for measuring solar wind and creating a map of the void.The satellite's payload will consist of two energetic neutral atom (ENA) imagers, IBEX-Hi and IBEX-Lo. Each of these sensors will consist of a collimator that will limit field of view, a conversion surface to convert neutral hydrogen and oxygen into ions, an electrostatic analyzer to suppress ultraviolet light and select ions of a specific energy range, and a detector to identify particle counts and the identity of each ion. IBEX-Hi will record particle counts at a higher energy band than IBEX-Lo. The payload will also include a Combined Electronics Unit (CEU) that will control the voltages on the collimator and ESA and will read and record data from the particle detectors of each
Oct 13, 2008 8:40 AM 
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1 commento:
This is an interesting article ....I love reading about space /the universe/etc..
Grazie senza .
ps...I'm NOT sure though, how i feel about them bombing the moon...to look for water....and things..i FEEL worried about it to tell you the honest truth.
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