The Universe Is Disappearing, And There's Nothing We Can Do To Stop It
After the Big Bang, the Universe was almost perfectly uniform, and full of matter, energy and radiation in a rapidly expanding state. As time goes on, the Universe not only clumps and clusters together owing to gravity, but the individual bound structures speed away from one another relentlessly on the largest scales. It's been nearly a century since scientists first theorized that the Universe was expanding, and that the farther away a galaxy was from us, the faster it appears to recede. This isn't because galaxies are physically moving away from us, but rather because the Universe is full of gravitationally-bound objects, and the fabric of space that those objects reside in is expanding.