Open source soa ebook download Dark Matter and Dark Energy: The Hidden 95% of the Universe by Brian Clegg (English Edition)

Dark Matter and Dark Energy: The Hidden 95% of the Universe by Brian Clegg

• Dark Matter and Dark Energy: The Hidden 95% of the Universe
• Brian Clegg
• Page: 176
• Format: pdf, ePub, mobi, fb2
• ISBN: 9781785785696
• Publisher: Icon Books, Ltd. UK

Dark Matter and Dark Energy: The Hidden 95% of the Universe

All the matter and light we can see in the universe makes up a trivial 5 per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That ’something' is dark matter – invisible material in five times the quantity of the familiar stuff of stars and planets. By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly fourteen times greater than all the visible material in existence. Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.

Dark Matter, Dark Energy: The Dark Side of the Universe - The Great
The rest of the contents of the cosmos is invisible to our current methods of These invisible components are dark matter and dark energy, the most eagerly  Dark Side of the Universe: Dark Matter, Dark Energy - Amazon.com
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Abstract: The nature of dark matter (DM) and dark energy (DE) which is supposed to constitute about 95% of the energy density of the universe is still a mystery. There is no . systems that were hidden from earlier surveys. Coma cluster for 

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