Nature by numbers

This is our known universe

This has got to be the most precise way of understanding how a child is born

What if the Sun were to be replaced by the other stars, like Alpha Centauri, Sirius, Arcturus, Vega, or even Polaris? Incredible Roscosmos (Russian Federal Space Agency) video shows this alternative...

It can't get much bigger than that... can it?

Part 2