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Space & Astronomy

Galaxies protected by dark matter

By T.K. Randall
March 14, 2009 · Comment icon 25 comments

Image Credit: NASA/ESA/ESO
The Hubble Space Telescope has revealed new evidence suggesting that galaxies are embedded in and surrounded by halos of dark matter, the mysterious form of invisible matter that scientists believe accounts for most of the universe's mass.
NASA's Hubble Space Telescope has uncovered new evidence that galaxies are embedded in and protected by halos of dark matter, the invisible form of matter that accounts for most of the universe's mass. Dark matter is invisible and nobody even knows what it is, but it is evident by the fact that galaxies hold together at all. Some unseen substance lurks in space — concentrated in galaxies — and generated gravity in amounts well beyond the visible matter."


Source: MSNBC | Comments (25)




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Comment icon #16 Posted by Eieam Wun 16 years ago
I think this thread got a bit away from the first IMHO legit comment...why are scientist, well astronomers allowed to believe in invisible unproven ideas? We need a degree now to speculate?
Comment icon #17 Posted by Codehook 16 years ago
Someone in this thread, without naming who, has compounded my opinion that some people in this world are just plain stupid. Eieam, they have proven that it exists through scientific means. They are able to determine its existence by the fact that there is more gravity than the visible matter could possibly produce. If you want to make an argument about it being just 'speculation' then I suggest reading up on dark matter, as you are not correct in your assumption. Personally I wouldn't have made this news, as it does seem a fairly pointless comment to make about galaxies until more is found out... [More]
Comment icon #18 Posted by Eieam Wun 16 years ago
Someone in this thread, without naming who, has compounded my opinion that some people in this world are just plain stupid. Eieam, they have proven that it exists through scientific means. They are able to determine its existence by the fact that there is more gravity than the visible matter could possibly produce. If you want to make an argument about it being just 'speculation' then I suggest reading up on dark matter, as you are not correct in your assumption. Personally I wouldn't have made this news, as it does seem a fairly pointless comment to make about galaxies until more is found out... [More]
Comment icon #19 Posted by As a Matter of Fact 16 years ago
Perhaps exploring space is a curious fascination for humans. It's part of the fruit of knowledge. We can spend billions of dollars for that budget because the most educate people on Earth have to have a challenge. There is no greater challenge than space......because it some unconscious way we're trying to get closer to God. : )
Comment icon #20 Posted by Codehook 16 years ago
...atlas here we are again.... wiki: In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. Dark matter is postulated to explain the flat rotation curves of spiral galaxies and other evidence of "missing mass" in the universe. ...so exactly who are they that prove dark matter exist, they might be the next in line to get laid off in such economically down trodden times... You're quoting Wikipedia for factual knowledge...big mistake. Wikipedia articles can be wr... [More]
Comment icon #21 Posted by Eieam Wun 16 years ago
You're quoting Wikipedia for factual knowledge...big mistake. Wikipedia articles can be written by anybody and a lot of the time are very inaccurate or simply incorrect. Whilst what you have quoted is not untrue, I would strongly advise not to quote Wikipedia in future for the reasons aforementioned. I'll say what was once said to me having said something along those lines you've just said about wiki: it is an excellent starting point . As you say your self what I quoted isn't untrue.... http://www.sciencecentric.com/news/article.php?q=07102707 "Previous studies suggested that the Bullet Clust... [More]
Comment icon #22 Posted by Eieam Wun 16 years ago
...in addition to the above quotes, I went to grab a few more "recent" thoughts on dark matter.... http://www.livescience.com/technology/080911-lhc-future.html talking about the new collider, the very first paragraph clearly indicates that dark matter is still unproven saying: "Though scientists don't yet know what dark matter is, it's probably in the room with you right now. Researchers hope to finally track down the stuff thought to make up most of the matter in the universe with the world's biggest atom smasher, which went online yesterday in Switzerland. The secrets of dark matter, the mys... [More]
Comment icon #23 Posted by Codehook 16 years ago
Interesting stuff. I did, in fact, read that article on sciencecentric.com after my previous post, but decided not to give it too much credit due to the source that it came from. The reason being, this was from a university student with support from his professor, rather than the NASA-affiliated team that came up with the evidence (they claim) for the existence of dark matter. "Though scientists don't yet know what dark matter is, it's probably in the room with you right now. Researchers hope to finally track down the stuff thought to make up most of the matter in the universe with the world's... [More]
Comment icon #24 Posted by loginlogin 16 years ago
So, scientists are allowed to believe in invisible things but average bear isn't allowed too??? Right It bugs the beejeebers out of me knowing that science spends mega-money chasing the menacing invisible matter in outer space instead of focusing their interests on the more important environmental and health issues here on Earth... I think it's Ridiculous! i agree scientists need to focus on more important things
Comment icon #25 Posted by Eieam Wun 16 years ago
i agree scientists need to focus on more important things ...maybe, to me I feel scientist should have the freedom to study whatever catches their fancy, but for heaven sakes if what you are studying shows little to no relevants in our daily lives then such things should be regulated to have the LEAST amount of public funding IMO. The only thing I see in astronomy that has any relevance, is knowing the earths gravitational effects for satelites and studying the suns activities to learn more about solar storms and such to prevent damage to our technology here. But hey what do I know I'm just a ... [More]


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