In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...

A new study published in Nature Astronomy is changing the way we understand how the Milky Way galaxy is moving through space. Turns out, there's a never-before-detected void in space called the ...

One approach looks far back in time, using the cosmic microwave background—the faint ... nearly two billion light-years of space. That makes it the largest void ever observed.