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 Dark Matter and Dark Energy: The Hidden 95% of the Universe
Free books online to read now no download Dark Matter and Dark Energy: The Hidden 95% of the Universe DJVU
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.
More eBooks: [PDF] Rewild Your Home: Bring the Outside In and Live Well Through Nature by Victoria Harrison site, Download PDF Lefranc 1952-2012 Tome 2 site, Online Read Ebook How a Realist Hero Rebuilt the Kingdom (Light Novel) Vol. 7 by Dojyomaru, Fuyuyuki read pdf, [download pdf] Let's Talk About It: The Teen's Guide to Sex, Relationships, and Being a Human by Erika Moen, Matthew Nolan download link, DOWNLOAD [PDF] {EPUB} Le choc démographique read pdf,
0コメント