Hubble Reinforces Planet Formation Theory
eldavojohn writes "Physorg is running an interesting article on the most recent of Hubble's accomplishments. It has provided us evidence supporting that which Emmanuel Kant proposed over 200 years ago — that planets do indeed form from disks of gas and dust that surround stars. The trick, apparently, was observing many cases where a star's planet forms on the exact same circumstellar disk as the dust and gas. Hubble also aided the researchers in determining the weight of many extrasolar planets. Some had contended that these were not planets but rather brown dwarf stars — which is determined by measuring their weight." Update: 10/12 23:08 GMT by T : That's not the only theory Hubble's recent observation's have supported: read on below for a bit more.
somegeekynick writes "Hubble has spotted a bunch of little galaxies, nicknamed Spiderweb, over 10 billion light-years away in the process of merging. This observation supports the so-called 'bottom-up' theory of galaxy formation, according to which smaller clumps of matter collided and merged with each other to form larger galaxies during early stages of the universe's evolution."
I don't think that she's the brown dwarf star that they are talking abour.
The article means mass, not weight: A star's weight is effetively zero, as it is in a microgravity environment. It's mass is trillions of kilograms.
Sorry, just needed to be pendantic for a moment.
'Sensible' is a curse word.
from TFA:
has at last confirmed what Kant and scientists have long predicted: that planets form from debris disks around stars.
Again, "modern" scientists jumping to unsupported conclusions. Simply observing a dust cloud and a planet in the same orbital plain around the same star doesn't prove the planet formation theory. Until they find a dust cloud containing a proto-planet in the process of condensing, the theory is still unproven.
So does this article back up the claim that Pluto isn't a planet, but more a free floating dwarf planet that was captured by our suns gravitational pull? I had read an article that supported the theory because it stated that Pluto was the only "planet" that didn't orbit on the same circumstellar disk as the rest of our solar systems planets.
In a move all to familiar to environmentalists in Canada [see Conservatives "green approach"], a national government has canceled a scientifically motivated project [Hubble] for which they have no replacement yet. When will governments realize that redundant-capable science projects [Internet] work better than canceling a project and leaving us blind for a measure of years?
I suppose worldly wastes just get a higher priority than figuring out how the Universe is put together, and thus learning to better manage and predict it...
Oh You POS
Thank god someone else remembered that mass != weight -- I thought I was the only one who stayed awake in middle school science class. Maybe cause I'm just too white and nerdy?
Theories of very hard to observe things are built up by weight of evidence. Currently study the Kuiper Belt is providing a lot of information, and as telescopes improve we find more and more about small objects in our own solar system. But if we wait till we have evidence of an object orbiting another star accreting mass from a dust cloud, that could take thousands of years.
Pining for the fjords
Hubble has taught us much because it's a big eye in the sky. Maybe if we put a big ear in the sky, we'd prove the wisdom of the old Music of the Spheres. We've already got the studio album... when will NASA release the live concert?
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make install -not war
I like it when Western "philosophers" copy the work of Indians and pass it off as their own.
Real philosophers, like Leibniz and Wolff, gave credit to the Chinese when it was due.
there is a repair mission in the works to keep Hubble alive till 2013.
the James Webb Space Telescope is slated to enter operations in 2013. Some parts are under construction already.
If you aren't looking to print the story... http://www.physorg.com/news79617716.html
Isn't weight calculated by the amount of force exerted on a particular mass? how in the hell can something that is floating in a 0 gravity environment have weight? Unless thier talking about it's relative weight if it were here on earth.
like saying "planet blahblah wieghs 700billion ton" NO IT DOESN'T it weighs nothing! there's no gravitational force acting upon it. If it was heavy it'd fall somewhere LMAO
really.. come on.. and how do they weigh something by looking at it anyway? they don't KNOW what the density is of the crap it's made out of. all the scientists know is what they have access too, that's the crap they have on earth. how do they know that some planet 10 light years away is made up of the same elements as ours? Thats like saying that you can tell how much a chunk of some unknown metal weighs because you know how much a chunk of aluminum, thats about the same size, wieghs.
ranting EOF
Planets are made by god, your theory is ludicrous, I'm sueing you for not acknowledging my alternative theory.
A boyfriend of Renée Descartes? Or her own, personal, Jesus?
Perhaps the editor meant Immanuel? Honestly, this is two major errors in the posts this week.
You save only 59 seconds over 8 miles by going 75 instead of 65. Do you really have to pass that guy? Do the Math!
I thought not.
Not all scientists accept Kant's theories regarding planetary evolution as correct. Even the scientists who do accepts Kant's theories as correct (and they are the overwhelming majority) will be the first to admit that they are theories. That's the nature of science.
Yes, the theory is still unproven - but it is well-supported, and this data from the HST provides even more support. Scientists haven't "jumped to unsupported conclusions" - they've (quite correctly) described this data as supporting an existing theory, not as proof or evidence of a fact.
Yes, TFA describes these things as facts, rather than theory. Blame the journalists, not the scientists.
"not planets but rather brown dwarf stars -- which is determined by measuring their weight"
Brown dwarf stars?! Ahhh, they've got the Hubble pointed at Gary Coleman's house again.
Must-resist-urge-to-make-lame-"Brown Dwarf"-comment.
[/insert William Shatner voice]
God put all the gas there to test our faith! Duh!