Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ed, the radia<ons detected by us now would be in the microwave range in the electromagne<c (EM) spectrum. •  The remnant heat leD over from the Big Bang, called the Cosmic Microwave Background Radia=on (CMBR), matched a blackbody curve for a radiator at about 3 K (kelvins). •  This CMBR was discovered in 1965. It is coming from all direc=ons in space, but not perfectly uniform:  This color ­coded image of the CMBR is effec<vely a “photo” of the Universe about 13.7 x 109 y ago. Large ­scale collec<ng of maJer had already begun, but galaxies, stars, and planets have not yet formed. 11 hJp:// ­background_WMAP.png The Nobel Prize in Physics 2011 hJp:// ­physicsprize2011.pdf 12 Black Holes •  A black hole is an object that exerts a gravita=onal aNrac=on on other bodies but cannot emit any light of its own. •  MaJer in a black hole is squeezed into a =ny region, and thus the gravity is so huge that even light cannot escape from it—invisible. hJp:// ­forma<on ­of ­stellar ­mass ­black ­hole...
View Full Document

This document was uploaded on 03/22/2014.

Ask a homework question - tutors are online