A new study by physicists predicts that the universe could one day collapse in a reverse Big Bang, offering fresh insight into how it might all end.

According to the model, dark matter may have started as particles that were hot, light, massless, and fast. As the universe ...

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

Researchers analyze how long black hole, white dwarf and neutron stars take to decay to determine universe's age.

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

"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 ...