Loading…
Loading contentLoading…
Loading contentMapping the faint microwave afterglow of the Big Bang and its minute temperature and polarisation ripples. Their statistics — including the baryon acoustic oscillations frozen into them — pin down the composition, geometry, and age of the universe.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.