Science glossary film: Dark energy

Dark energy

Sorry, this film is not free to view

Please log in to watch the full film or contact us for further information

A mysterious energy field present across the entire known Universe, which accounts for 70% of its mass-energy.

A mysterious energy field present across the entire known Universe, which accounts for 70% of its mass-energy. Its existence was suggested to account for unexpected observations, such as the fact that the post-Big Bang expansion of the Universe is accelerating, not slowing down. Something is working against the effects of gravity, and so far dark energy is the best explanation anyone has proposed.

Its existence was suggested to account for unexpected observations, such as the fact that the post-Big Bang expansion of the Universe is accelerating, not slowing down. Something is working against the effects of gravity, and so far dark energy is the best explanation anyone has proposed.

Embed this film

Copy and paste the embed code above to include this film on other websites.

Share this film

Copy and paste the code above to link to this page.