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

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

Download eBook

Download ebooks for ipods Dark Matter and Dark Energy: The Hidden 95% of the Universe 9781785785696 RTF PDF by Brian Clegg

Overview

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.

Pdf downloads: [Kindle] The Karate Kid: The Classic Illustrated Storybook download read pdf, Download PDF Creative Garden Photography: Making Great Photos of Flowers, Gardens, Landscapes, and the Beautiful World Around Us pdf, Read online: Here is the Sweet Hand: Poems link, Read online: Cinémas link, {epub download} Super Pumped: The Battle for Uber pdf,