Our best observations can't come up with a single answer for how quickly the universe is expanding. Maybe that's because our galaxy is at the center of a giant void. When you purchase through links on ...

Imagine waking up one day to find out you live inside a vast, invisible bubble — a region of space so vast it stretches a billion light-years across, and yet so elusive it leaves no visible boundary.

Sound waves 'fossilized' in the arrangements of galaxies across the Universe support the theory that the Milky Way galaxy floats adrift in a giant void in space. If this is the case, we could be ...