Main content
![](https://ichef.bbci.co.uk/images/ic/640x360/p04ymkfs.jpg)
Supermassive black hole secrets
With a mass of 4 million Suns the black hole at the centre of our galaxy could be about to do something spectacular, as Prof Brian Cox and Dr Lisa Harvey-Smith explain.
Duration:
This clip is from
More clips from Episode 3
-
Engulfed by a raging bushfire
Duration: 01:33
-
Star Tales: Southern Cross
Duration: 00:48
-
The search for ET in Australia
Duration: 05:49
-
Finding ancient life on Mars
Duration: 06:20
More clips from Stargazing
-
The World's Most Powerful Rocket—Moon Landing Special
Duration: 06:10
-
Mining the Moon—Moon Landing Special
Duration: 06:27
-
The Spaceship factory—Moon Landing Special
Duration: 03:03
-
Is the Moon upside down?—Australia, Episode 2
Duration: 04:35