Astronomers have known for a century that the universe is expanding. We can now trace this expansion over much of its almost ...

A growing list of observations suggests we live in the crosshairs of a giant cosmic void — the largest ever observed. Astronomers first suggested such a void in 2013 and evidence for its ...

This cosmic void is known as the KBC void after its discoverers ... provided our patch of the universe is about 20% less dense than average out to a billion light years from us.

Not as long as a star shines, of course, but still quite a bit (even on a cosmic scale ... to very cold and dense. Over time, with more density, it can continue to collapse, due to the effect ...