Main Page | See live article | Alphabetical index To help compare orders of magnitude of different times this page lists times less than 10-24 seconds (1 yoctosecond) See also times of other orders of magnitude. 10-44 seconds after the Big Bang: space and time separate 5.4 x 10-44 seconds is Planck time, the smallest measurable unit of time. Some round this to 10-43 10-28 seconds after the Big Bang: start of cosmic inflation longer times This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.