A cosmic zoom-out shows the vast scale of the universe, highlighting billions of galaxies and raising the question of whether ...

If you continue zooming in on the universe, the familiar world quickly dissolves. Molecules turn into atoms, atoms into ...

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make ...

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 ...

The geometry of space, the setting in which physical laws operate, may hold clues to some of the biggest unanswered questions in fundamental physics. The underlying structure of spacetime itself could ...