Add Yahoo as a preferred source to see more of our stories on Google. The lyrics to the song reflected a changing mood of peace and love in the country in the late 1960s amid the astrological belief ...

Physicists are increasingly entertaining a radical possibility: our familiar universe of three dimensions of space and one of time might be only part of a larger structure, with a hidden fifth ...

Physicists are quietly testing wild new theories that treat a hidden fifth dimension as more than science fiction, suggesting it could steer how gravity, dark matter and even cosmic history unfold.