What came before the Big Bang? This video explores three prominent theories: 1. **Cyclic Universe**: This theory suggests that the Big Bang is part of an endless cycle of cosmic expansions and ...

Cyclic cosmology, or the big bounce, is the idea that the universe will eventually crunch back together and then go through another big bang. Columnist Leah Crane finds that, appropriately, it’s comin ...

The universe may not only be geometry and energy—but also memory. And in that memory, every moment of cosmic history may still be written. For more than a century, physics has been built on two great ...

What if the Big Bang wasn’t the beginning of everything and instead just a bridge from a previous universe into our own? As unconventional as this may seem, the belief is held by a Nobel Prize-winning ...

I can accept the apparent violation of the light-speed-limit in the Big Bang theory by picturing there being no space at all before the BB. Before there was nothing, not even space. Then there was ...

The scientific wonderers at What If, with Anna Ijjas, break down theoretical frameworks describing a universe that undergoes ...

Start off in any direction and fly through the universe. Out of our solar system, beyond the edge of the Milky Way, through the forest of galaxies that make up our Local Group into the wilderness of ...