At the core of a galaxy some 300 million light-years away is a supermassive, inactive black hole that is about 21 billion times the size of the sun.
via New York Times
There are advances being made almost daily in the disciplines required to make space and its contents accessible. This blog brings together a lot of that info, as it is reported, tracking the small steps into space that will make it just another place we carry out normal human economic, leisure and living activities.