Hubble’s observation revealed that the rate at which our universe is expanding is accelerating. As more time passes, the ...

Galaxies, like so many other astronomical objects, are surprisingly difficult to define. Here’s a hand-wavy attempt: a galaxy is a collection of stars, gas, dust and dark matter all held together by ...

The question of whether the cosmos goes on forever is no longer just a late night thought experiment, it is a live research problem that cuts to the heart of modern physics. Astrophysicists are using ...

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 ...

What shape is the universe? The mathematics of flat space is astonishingly versatile, and new research is upending the ...

Most scientists think that everything that we know and experience began with the Big Bang, 14 billion years ago. But how can ...

In this video, we explore the concept of the Universe's end and the possibility of its rebirth. Key topics covered include the potential for the Big Bang to occur again, predictions on how the ...