Simulation of the Big Bang and expanding universe

In this simulation galaxies are shown as balls. It shows the expansion of space, with every galaxy moving apart from every other galaxy, but with no centre or edge. This is the current understanding of the Big Bang. In this simulation the expansion rate is constant (in reality it is increasing due to Dark Energy - that's another video on this channel).

This simulation is one of many made during creation of the Australian National University's free online astrophysics courses:

https://www.edx.org/xseries/astrophysics

It was created using the VPython library (vpython.org)

• #science_technology
• #big_bang_literature_subject
• #metric_expansion_of_space
• #astrophysics