Cosmocolor is an exhibition which has selected some of the best pics of the sky obtained by amateur astronomers who participated in "Fotocósmica 2004", a competition organized by the Instituto de Astrofísica de Canarias (IAC) to create the Astronomical Image Bank (BIA). Amateur astronomers have a large number of very valuable and high quality

Have you ever thought about light? What's the most striking thing about it? It speed, of course...exceeded only in our imagination. Ready to meet the challenge of measuring it? In this project we aim to relate a simple astronomical observation with a universal constant, c (the speed of light), and tell you about one of the greatest contributions to