Tag Archives: Expanding universe

Bursting the Big Bang Balloon

The current received wisdom is that the universe began with a big bang some 13.7 billion years ago and that it has been expanding ever since.  This idea of an expanding universe begs the question where was the centre from which this big bang emanated, where is the point in the universe away from which […]

An experiment to determine whether the universe is expanding

In the 19th century the German physicist Joseph von Fraunhofer (1787-1826) discovered that the solar spectrum contains a number of dark bands.  Fraunhofer made a detailed study of the wavelengths of these lines and later it was discovered independently by Bunsen and Kirchhoff that each chemical element has a characteristic set of these so called […]