on January 14, 2010
20 years old content
I'm disappointed. I purchased this DVD thinking that it would be relatively current information, since it's described as released in 2007. Well, the content of the DVD was created some time in the late 80's; there are references to "when the Hubble telescope is launched into space" and "we're almost 20 years after we put a man on the moon"... The man on the moon was July 1969 and the Hubble was launched in April 1990. So the information contained on this DVD was created around 1988 or early 1989. A bit outdated I would say.
It would be great for someone who knows very little about these topics. Nice introduction to some of the concepts explained in Hawking's book "A Brief History of Time", published in 1988.
I would have not purchased this DVD if I had known the content was 20 years old.