The main article for this category
is Big Bang
Simulated image of the first stars, 400 Myr after the Big Bang
The term Big Bang generally refers to the idea that the Universe has expanded from a primordial hot and dense initial condition at some finite time in the past. According to the ESA/Planck data, released in March 2013, the initial conditions occurred 13.798 ± 0.037 billion years ago, and the Universe continues to expand to this day.
Pages in category "Big Bang"
The following 22 pages are in this category, out of 22 total. This list may not reflect recent changes (learn more).