For decades, physicists assumed the universe would fade into darkness over a timescale so vast it barely fits in notation: around 10¹¹⁰⁰ years. But researchers at Radboud University in the Netherlands ...

Scientists were surprised to find that dark energy causes the universe is to expand, which has begged questions of whether that will continue, and to what end.

It's the end of the world as we know it — a lot sooner than we think. A team of researchers have drastically scaled back the going estimate of how long it will be until the universe ceases to exist.

A dying star may not become a black hole after all. New math hints at a hidden cosmic birth inside collapse, and the ending ...

New data from major dark-energy observatories suggest the universe may not expand forever after all. A Cornell physicist calculates that the cosmos is heading toward a dramatic reversal: after ...

Andromeda and the Milky Way merge. NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger Share Curious Kids is a series for children of all ages. If you have a question you’d ...