Add Yahoo as a preferred source to see more of our stories on Google. In space, there are four dimensions: length, width, height and time. scaliger/iStock/NASA via Getty Images Plus About a century ...

TULSA, Okla — Construction will start in early August so that the city can make new additions to the center of the universe. The Center of the Universe attracts plenty of tourists from out of state.

Earth’s location in the Universe is utterly unremarkable, despite recent theories that propose toppling a foundation of modern cosmology, according to a team of University of British Columbia ...

(THE CONVERSATION) About a century ago, scientists were struggling to reconcile what seemed a contradiction in Albert Einstein’s theory of general relativity. Published in 1915, and already widely ...