In less than 100Â seconds, Luke Davies explains how we know dark energy exists. Want to read more? Registration is free, quick and easy Note: The verification e-mail to complete your account registration should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder. If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org. E-mail Address
Dark matter and energy Research update Plasma physics sets upper limit on the strength of ‘dark electromagnetism’
