Hola!
Look there :
http://news.independent.co.uk/world/science_medical/story.jsp?story=351339
Look there :
http://news.independent.co.uk/world/science_medical/story.jsp?story=351339
In a series of experiments using the Jodrell Bank observatory in Cheshire, a team of British and American scientists has confirmed the existence of "dark energy" by measuring the amount of light from distant star-like objects that is bent by this hidden force during its long journey through space.