Accelerating universe
Accelerating universe is a term for the idea that our universe is undergoing rapid expansion. In the late 1990s, observations of type I supernova produced an unexpected result that the expansion of the universe appears to be accelerating. These observations appear more firm as new data has appeared. This means that the speed with which a distant galaxy recedes from us increases over time.As this trend continues, there is the resultant inability to see any other galaxies any more. This new theory of the end of the Universe has been called the Big Rip.
The three theoretical approaches to explain this are a non-zero cosmological constant, which may have caused cosmic inflation, an energy known as quintessence, or dark energy.
The observation of an accelerating universe appears to present great problems for Dyson's eternal intelligence.
