Mon premier blog

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: 9781785785504
• Publisher: Icon Books, Ltd. UK

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

Online textbook free download Dark Matter and Dark Energy: The Hidden 95% of the Universe 9781785785504

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. 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 like clay off a potter’s wheel, but something concealed holds them together. This ‘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, was pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly 14 times greater than all the known material in existence. With dark matter and dark energy making up 95 per cent of reality, cosmologists have uncovered the biggest puzzle that science has ever faced.

More eBooks: Manuel anglais téléchargement gratuit Thérèse Desqueyroux (Litterature Francaise) read pdf, Descargas gratuitas para ebooks CURSO BASICO DE GANCHILLO de (Literatura española) ePub pdf, Descargar ebooks gratuitos para ipad 3 DISTANCIA DE RESCATE here, Download ebook from google books free Wildcard pdf, Free public domain audiobooks download Star Wars The Skywalker Saga (English literature) FB2 MOBI 9781368041539 by Delilah Dawson, Brian Rood read book, Descarga gratuita de archivos ePub RTF ebooks. INCENDIOS download pdf, Télécharger l'ebook Culottées Tome 2 9782075079846 ePub par Pénélope Bagieu read book,