Dark Matter, Dark Energy and the 95% We Can’t Explain | BBC Earth Science

Much of the universe remains unexplained, with dark matter and dark energy accounting for about 95% of it. Professor Catherine Heymans, Astronomer Royal for Scotland, has spent decades refining scientists' picture of dark matter. She describes the gaps in current understanding as one of the most exciting challenges in science rather than a failure.

• Roughly 95% of the universe is not yet explained by current science
• Professor Catherine Heymans on decades of work on dark matter
• Why unanswered questions are seen as a scientific challenge

Science has a huge challenge on its hands: understanding the 95% of our universe that remains unexplained. Professor Catherine Heymans, Astronomer Royal for Scotland, has spent decades refining our picture of dark matter. While our understanding of the cosmos remains frustratingly incomplete, she sees this not as a failure, but as one of the most exciting challenges in science. What secrets are still waiting to be uncovered? #DarkMatter #Space This clip is from Science's Greatest Mysteries. Best of Earth Science: http://bit.ly/EarthLabOriginals Best of BBC Earth: http://bit.ly/TheBestOfBBCEarthVideos This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx