Sketched evolution of the scale parameter of the universe for different parameters of the <a href="https://en.wikipedia.org/wiki/Friedmann_equations" class="extiw" title="w:Friedmann equations">Friedmann equations</a>. English labelling.
<a href="//commons.wikimedia.org/wiki/User:Geek3" title="User:Geek3">Geek3</a>
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<span class="int-own-work" lang="en">Own work</span><br>This file was derived from: <a href="//commons.wikimedia.org/wiki/File:%C3%89volution_de_l%27univers.svg" title="File:Évolution de l'univers.svg">Évolution de l'univers.svg</a><br>