The Greatest Unsolved Mysteries of the Universe: Giant Black Holes (Quasars)

Dr Paul Francis sheds some light on some of life's big questions in this web series - The Greatest Unsolved Mysteries of the Universe. In this third episode, he looks at the mysteries of Giant Black Holes.

Each episode in this series explores a mystery in-depth, in an accessible and light-hearted way. Dr Francis will also be delving into some of the comments left on his previous video to answer some viewers' mysteries. If you have a universal mystery you'd like Paul to have a look at, leave it as a comment on this video. He'll be picking a few to look at throughout the series.

The series builds on his video from 2010, The Greatest Unsolved Mysteries of the Universe.

Dr Paul Francis is an award-winning astrophysics researcher and lecturer at The Australian National University. His research focuses on comets, galaxy formation and novel teaching methods.

[BaschDO]

Great video, thanks Dr Paul Francis for the excellent exposure

[RowanGrigg]

Hi Paul, I'm a bit worried about the clever astronaut who fires the rocket sideways and goes into a stable orbit. How fast is he travelling as he scoots around the black hole? Is it a significant percentage of c, and will he get like heavy man, as Nigel would say? Rowan

[mjusiqtube]

Yep. Sound is a problem. This guy though is excellent - have seen some videos with him before. :-)

[stramster]

I had no idea space was permeated with peanuts.
It stands to reason though if the moon is made of cheese.