Main content
![](https://ichef.bbci.co.uk/images/ic/640x360/p00zdtpr.jpg)
The birth of a black hole
Scientists think that when the most massive stars die in a supernova explosion they can leave behind a mysterious tombstone – a black hole. It’s still, to some extent, a theory but Professor Douglas Leonard reckons he’s seen it happen.
Duration:
This clip is from
More clips from Seven Ages of Starlight
-
Making a star on Earth
Duration: 02:05
-
Devouring red giants
Duration: 01:48