September 30, 2011
new finding relates to Black Holes
By using Hubble Space Telescope, astronomers found that supermassive black holes growing in small galaxies. According to the article, it seems that all massive galaxies host a central supermassive black hole. However, in the local universe, active black holes are not common in small "dwarf" galaxies. The galaxies studied by the scientists are about 10 billion light-year away. And just like what we learned in this course, when we look at something that is 10 billion light year away, it is actually the image 10 billion years ago and this means that the scientists are looking at "the teenage years of the universe" said by author Trump.
This finding arise a new big puzzle which is what happened to these small dwarf galaxies? According to Trump, there are two possibilities: they grow to massive galaxies or they remain small. Scientist Faber said that if these small dwarf galaxies remain small, then "there must be a large population of small black holes in dwarf galaxies that no one has noticed before."
As the technology is getting more and more advanced, we are able to discovery the vast universe in a deep way. I really hope to know more about the every single detail of this huge universe.
For pictures and more information on the article: http://www.astronomy.com/News-Observing/News/2011/09/Small%20distant%20galaxies%20host%20supermassive%20black%20holes.aspx
Posted by zhengxi at September 30, 2011 11:58 PM
The Hubble Space telescope has provided astronomers with such vast information about space. We're truly lucky to have such equipment to give us insight about the "unknown." I find black holes to be extremely intriguing since astronomers know what they are and that they exist, yet there is still so much about them that is still in the dark. I wonder how many black holes exist in our galaxy. It is probably a hard number to be sure about, but I'm sure many are curious about these obscure patches in space.
Posted by: jenpm at October 2, 2011 07:53 PMLogin to leave a comment. Create a new account.