Mysterious force has remained constant over the life of the universe. It refused to fade away. The first results from an international effort to probe the nature of dark energy suggest this. Many telescopes first suggested the existence of dark energy. To search for the same cosmic evidence, the Supernova Legacy Survey (SNLS) project has enlisted some of the world’s largest telescopes. The existence of dark energy is defined by a kind of stellar explosion called a type Ia supernova.
How much did the universe expand since the stellar explosions occurred? Measuring and comparing the brightness and spectral signature of this type of supernova provides the astronomers with the reply. It was these measurements that first revealed that the expansion of the universe is accelerating. This finding in 1995 left the astronomers baffled. The SNLS team is now trying to analyze the expansion more precisely, to find out how the accelerating force behaved in the past.
Via: New Scientist
Dark energy Remains Constant Over the Universe's Life: Scientists
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