The Spanish Correoslaunched an addition to the Science series with the issue of a self-adhesive stamp to commemorate the creation of the European Organization for Nuclear Research (CERN) 60 years ago.
The European Organization for Nuclear Research (CERN) was founded in 1954 on the initiative of 12 countries in Europe. The organisation, whose headquarters are in Geneva, Switzerland, is the world's most important research centre into particle physics.
Its laboratories and facilities cover an area of 600 hectares on the border between France and Switzerland.
At present, 20 member states make up CERN: Germany, Austria, Belgium, Bulgaria, the Czech Republic, Denmark, Slovakia, Spain, Finland, France, Greece, the Netherlands, Hungary, Italy, Norway, Poland, Portugal, the United Kingdom, Sweden and Switzerland.
There are also eight institutions and countries that act as observers.
Research at CERN uses the largest and most complex scientific instruments ever built, and which study the basic components of matter, such as the particles forming our universe. Among these instruments are the particle colliders and sensors. The colliders accelerate beams of particles to almost the speed of light and make them crash into each other or into fixed objects. The sensors observe and record the results from these collisions.
Scientists from all over the world work with the 20 European countries forming CERN, and around 10,000 particle physicists regularly go to the centre to carry out their research there.
Spain joined the organisation in 1961 and left in 1968, re-joining in 1983. Over 30 universities and scientific institutes in Spain work with CERN.
The stamp design shows the underground tunnel at CERN where the particle collider is located. It is surrounded by the flags of the member states and the organisation's logo.