Opinion
Isaac Arthur on MSNOpinion

Civilizations at the End of Time: The Big Rip

Current science and cosmology tell us the Universe will slowly die and ebb away countless trillions of trillions of years from now, but another model - the Big Rip - says that end may come far sooner, ...
"For the last 20 years, people believed that the cosmological constant is positive, and the universe will expand forever," Tye says. "The new data seem to indicate that the cosmological constant is ...