Previous Article Next Article Table of Contents Nature, Vol.555, No.7694, 67-+, 2018 DOI10.1038/nature25792 Export Citation An absorption profile centred at 78 megahertz in the sky-averaged spectrum Bowman JD, Rogers AEE, Monsalve RA, Mozdzen TJ, Mahesh N Please enable JavaScript to view the comments powered by Disqus.