Expansion of the universe, proper distances diagram (Animation).
<p>Horizontal axis: Proper distance in billion light years. Vertical axes: time since Big Bang in billions of years
</p><p>Shown are the Particle Horizon rP (green), Event Horizon rE (magenta), Hubble Radius rH (blue).  Past and future light cones rL (orange) are animated. Dashed grey lines are lines of constant comoving distances (i.e. the Hubble flow).
</p><p>Data: Planck 2013
</p><p>Code and 4K resolution images at <a rel="nofollow" class="external free" href="http://flrw.yukterez.net">http://flrw.yukterez.net</a>
</p><p>Video in 4K at <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=QyIYJVMx-Uo">https://www.youtube.com/watch?v=QyIYJVMx-Uo</a>
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<a href="//commons.wikimedia.org/wiki/User:Yukterez" title="User:Yukterez">Yukterez (Simon Tyran, Vienna)</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>