Cosmic microwave background radiation (CMB)

A map of the cosmic microwave background radiation

Cosmic microwave background radiation (CMB)

In the mid-1960s, Arno Penzias and Robert Wilson detected leftover, cooled down radiation from early in the Universe's history by carefully scanning the sky with a device called the Holmdel Horn Antenna. Their discovery was important evidence in support of the Big Bang theory and won them the Nobel prize.

The CMB was later mapped in greater detail by NASA's COBE and WMAP missions. The European Planck mission, launched in 2009, is currently creating the most detailed map yet.

Image: A map of the CMB created by the COBE satellite (credit: NASA, DMR, COBE Project)

Watch and listen to clips from past programmes TV clips [6]

A map of the cosmic microwave background radiation

Introduction

Traces of the early Universe are found.

About Cosmic microwave background radiation (CMB)

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