{"id":669,"date":"2015-07-23T03:02:11","date_gmt":"2015-07-23T01:02:11","guid":{"rendered":"http:\/\/le-bars.net\/yoann\/?p=669"},"modified":"2015-09-16T12:45:21","modified_gmt":"2015-09-16T10:45:21","slug":"the-big-bang-when-the-universe-is-not-banging","status":"publish","type":"post","link":"https:\/\/le-bars.net\/yoann\/en\/2015\/07\/23\/the-big-bang-when-the-universe-is-not-banging\/","title":{"rendered":"The Big\u00a0Bang: when the Universe is not banging!"},"content":{"rendered":"
\"The<\/a>
The microwave sky, one of the oldest known radiation, as seen by the Planck mission<\/a> \u2013 \u00a9\u00a0esa<\/span><\/a>.<\/figcaption><\/figure>\n

Is it because it concerns the origins of things? Anyway, the Big\u00a0Bang is a scientific subject which everyone seems to have heard of. However, it appears that general ideas about it are not really clear.<\/p>\n

As it will be question of the Big\u00a0Bang in the subjects I will address soon in this website, here is an opportunity to inaugurate scientific popularisation articles in my blog: I propose to present the basics of the Big\u00a0Bang, using simple experiments that everyone can do at home.<\/p>\n

<\/p>\n

The term Big\u00a0Bang<\/a> was introduced in 1950 by the British astronomer and cosmologist Fred\u00a0Hoyle<\/a> during a BBC<\/a> radio show entitled The Nature of Things<\/em>. By the way, he used the term in an ironic sense since, at least at that time, he did not consider that this theory was founded. The expression has nevertheless prospered in such an extent that it is commonly used now.<\/p>\n

However, it is misleading as it leaves us believe that the Big\u00a0Bang is an explosive temporal event, that is to say localized, both in time and in space. What it is not\u00a0\u2026<\/p>\n

The Big\u00a0Bang theory is established within the framework of the general relativity<\/a>, which main founder<\/a>1<\/sup><\/a>A. Einstein, 1916. Die Grundlage der allgemeinen Relativit\u00e4tstheorie, Annalen der Physik, 49, pp. 769\u2013822.<\/span><\/span>