In a remote stretch of New Mexico desert, a geometric monument and a cluster of otherworldly rock formations have been recast ...

Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing ...

What if there are other universes, just like ours? With an infinite number of Earths? With uncountable versions of you? And what if we don’t have to look too far to find them? Maybe a mirror version ...

We have not been able to detect dark matter yet, even though there are many aspects of the universe that suggest the existence of invisible matter. In one new theory, it is possible that dark matter ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...