Imaging the Universe - WMAP
Who are we?
The workshop and exhibition
Resources and information
St Andrews <
Medical
Volcanos
Hiper

Imaging <
The Basics
Active
Passive

Applications <
The Universe
Security
Brijot Imager
Clouds
Medical
Fusion
Military
Car Radar
Debris Detection
Aircraft Landing

Downloads <
Teacher Pack
Workshop Outline
Project Outline
Project Evaluation
Cheltenham Eval
IR/mmw/Thz Eval
BA Festival Eval
External links
Photo gallery



This picture shows how the universe looked 13 billion years ago! The millimetre wave WMAP probe imaged the Cosmic Microwave Background: the radiant heat left over from the Big Bang.

The temperature fluctuations in the image are tiny (0.0004c!) but give cosmologists vital clues as to how matter in the early universe evolved to form the stars and galaxies that we see today.

In molecular clouds such as Orion, the molecules radiate in the radio region when they spontaneously change rotational energy levels. Some molecules can be excited into higher states by the CMB and as they de-excite they give off light which can be in the millimetre region. This light can be observed from earth and used to deduce the chemical composition of the cloud. Observation in the millimetre region gives information about relatively heavy molecules.

Planets are relatively bright objects at mm-wavelengths, which allow the search for new planets. A new telescope, the Atacama Large Millimetre Array (ALMA) is currently under construction in the Chilean Andes and when it is completed in 2012 it will have better resolution than the Hubble Space Telescope. It will be able to provide more detailed information about the CMB and the search for Earth-like planets in other solar systems.

Visit the NASA site











'Vision For The Future' is an EPSRC funded project run by the MMW group at the University of St Andrews
Copyright ©2006 by the University of St Andrews :: web, graphic and exhibition design by FifeX Ltd, www.fifex.co.uk