Posted on 03/30/2012 6:30:02 PM PDT by U-238
German astronomers have discovered an ancient planetary system thought to be a survivor of one of the earliest cosmic eras, from 13 billion years ago. The system consists of the star HIP 11952 and two planets. Such an old system will help shed light on planet formation in the early Universe, which occurred under conditions quite different from those of later planetary systems such as our own.
Accepted planetary theory states that, generally speaking, a star that contains more 'metals', (i.e. chemical elements other than hydrogen and helium) is more likely to have planets; it is also widely accepted that planets are formed in discs of gas and dust that swirl around young stars. The team noted with interest, then, that despite this observed trend for planets to form within clouds that contain heavier chemical elements, a star containing very little bar hydrogen and helium has two planets orbiting it.
HIP 11952, which belongs in the large northern constellation Cetus, is situated about 375 light years from Earth. By carrying out a planet survey into metal-lacking stars, German researchers identified two giant planets around this star. Although these planets are not particularly unusual in themselves, it is out of the ordinary that they should orbit such an old and metal-deficient star.
These findings, published in the journal Astronomy & Astrophysics, therefore throw up questions about what it actually takes to make a planet. If metal-rich stars are more likely to form planets, how were the two planets around star HIP 11952 formed?
In the beginning, the Universe contained almost no chemical elements other than hydrogen and helium. Nearly all the heavier elements were produced over time inside stars, before being flung into space as massive stars and ending their lives in giant explosions called supernovae.
(Excerpt) Read more at balkans.com ...
Again, I cannot argue your views.
“Astronomy, the Science with a lot of BS... Not all of it but a huge part of it is just BS...”
________________________________________
Well, it is not nearly as bad as all the Kook to Kookers (Coast to Coast AM) that are convinced that ET is zipping around all over Earth.
OK, so how is hydrogen inside a bar different from ordinary hydrogen?
If this star is 375 light-years away, the light they are analyzing left the star about the time Harvard College was founded.
Yup, sounds impossible, that system should be on the edge of the visible universe if I'm thinking about it right.
The article explains it is thought the star is a remnant of an ancient galaxy that collided with our own galazy billions of years ago.
Wow!, Wow, and Wow!!
So, some planets are dense in metals, and others are not: 375 light years away; a Carl Sagan “billions of years ago.”
I guess that will make it very difficult for the super heads to explain Earth, a metallic planet: vs. with Jupitor or Neptune, gaseous planets. Here, in our own sun system. Who woulda thunk?
How much grant money is funneled to these folk???
OK, so how is hydrogen inside a bar different from ordinary hydrogen?
They charge more for it...
“OK, so how is hydrogen inside a bar different from ordinary hydrogen?”
‘They charge more for it...’
Not on ladies night...
 |
||
| · join · view topics · view or post blog · bookmark · post new topic · subscribe · | ||
| Google news searches: exoplanet · exosolar · extrasolar · | ||
I doubt there will be any.
From what i have gathered in the past NOTHING 375 light years away can be 13 Billion years old.
13 Billion years ago this local space did not exist.
“It says it was formed somewhere else and this galaxy picked it up.”
This star system wasn’t dragged 13 BILLION light years.
or maybe it was........
Astronomers have shoestring bugets.. In 2005 NASA had a budget of $16.2 billion, this includes not only the human spaceflight division, but also other engineering projects, and science funded by NASA. The total federal spending budget in 2005 was on the order of $2 trillion ($2000 billion), making the NASA share 0.8% of the budget. By comparison roughly 19% of the budget was spent on the Military, 21% on Social Security and 8% went to paying interest on the national debt.
http://curious.astro.cornell.edu/question.php?number=684
I was thinking more of a globular cluster where this star originated from and then ejected.Globular clusters are generally composed of hundreds of thousands of low-metal, old stars. The type of stars found in a globular cluster are similar to those in the bulge of a spiral galaxy but confined to a volume of only a few million cubic parsecs. They are free of gas and dust and it is presumed that all of the gas and dust was long ago turned into stars.
Two hydrogen atoms walk into a bar.
One says, “I've lost my electron.”
The other says, “Are you sure?”
The first replies, “Yes, I'm positive...”
In physics, a bar is equivalent to 10 newtons, per square centimeter.This is the pressure exerted by the Earth's atmosphere at sea level
bflr
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.