The Big Bang Theory is how astronomers believe the universe started but can they figure out when and how it will end?
Scientists measure slow death of the Universe
"An international team of astronomers studying 200,000 galaxies has measured the energy generated within a large portion of space more precisely than ever before, discovering that it's only half what it was 2 billion years ago and fading - the Universe is slowly dying."
What is a Cosmological Constant?
"In its simplest form, general relativity predicted that the universe must either expand or contract. Einstein thought the universe was static, so he added this new term to stop the expansion."
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