What is Dark Energy?
It is the energy that is causing the Universe to expand at an accelerating rate. If the energy were converted to mass, (using Einstein famous equation E = mc2 that would make up about 70 percent of the Universe). Dark Matter 25 percent and all we can see plus the stars and planets we cannot because they are two far away equals about 5 percent.
How can we learn about the Universe? Astronomers and other scientists like Edward Hubble first pointed out that other galaxies exist in the billions. He also used the red shift to predict most these galaxies were moving away from us, leading to the big bang theory. The further they were from Earth the faster they moved away from Earth. Although that is true most times, there are exceptions. For example, Andromeda is expected to collide with our Milky Way galaxy in about 4 billion years. The answer for human survival is to move to one or more long life nearby solar systems that are longer life and have habitable planets. Long before that happens, the oceans will boiloff and earth will no longer be habitable.
In astronomy, the standard candle refers to a type 1a supernova, which can be about as bright as an entire galaxy but only lasts for a about week. Astronomers and other scientists now have a tool to measure distance with some accuracy because these type 1a supernova are always the same brightness. Is the data from the Humble telescope accurate enough to solve Dark Energy? No explanation has yet, come forward from the data.
Dr. Levin, in his novel 30th Century: Escape through his leading lady, Jennifer puts forth an interesting and original idea. That is that Black Holes create space. If true that idea could expand the universe and explains Dark Energy. It is not quite that simple, we need to no more about black holes and the next two space telescopes planned is James Webb and HDST shown below may give us more answers or more questions.
The space telescopes, James Webb to be launch in 2018 and the HDST maybe launch after 2030 but before 2040. In the scheme of things, it will not be a long wait before we get to look at planets for the signs of Life and its biology. The James Webb will focus on the infrared and will not be a replacement in the visible and near infrared for Hubble. We must wait until 2030s. Stay tune for next blog about what could have caused the BIG BANG?
Credit: NASA, ESA, and E. Sabbi (ESA/STScI)http://hubblesite.org/image/3087/news_release/2012-35
“Two-star clusters are becoming one in 30 Doradus, 170,000 light-years away in the Large Magellanic Cloud.”
NASA photo from Hubble of distant stars and nebula
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