<a href="https://en.wikipedia.org/wiki/Gamma_Orionis" class="extiw" title="en:Gamma Orionis">Gamma Orionis</a>, <a href="https://en.wikipedia.org/wiki/Algol" class="extiw" title="en:Algol">Algol B</a>, the <a href="https://en.wikipedia.org/wiki/Sun" class="extiw" title="en:Sun">Sun</a>, and the objects from <a href="//commons.wikimedia.org/wiki/File:1e8m_comparison.png" title="File:1e8m comparison.png">Image:1e8m_comparison.png</a>, to scale.  Note that the star surfaces are entirely my interpretation, and I am not an astronomer.
<a href="https://en.wikipedia.org/wiki/User:Paul_Stansifer" class="extiw" title="en:User:Paul Stansifer">User:Paul Stansifer</a>, and others (see "source")
GPLv2
<p>Planetary texture maps (with the exception of Earth) and Earth's cloud map from <a href="https://en.wikipedia.org/wiki/Celestia" class="extiw" title="en:Celestia">Celestia</a>, used under the GPL, version 2. Earth's surface is a monthly Blue Marble Next Generation image from <a href="https://en.wikipedia.org/wiki/NASA" class="extiw" title="en:NASA">NASA</a>, and thus public domain.
</p><p>Physical information is based on the Wikipedia articles about the respective bodies.  The color of OGLE-TR-122b is based on an artist's rendition at <a rel="nofollow" class="external autonumber" href="http://www.space.com/scienceastronomy/050303_star_small.html">[1]</a>
</p>
My own contributions to this image (which are mainly the stars) are available under the GPL, v. 2, and other licenses. See <a href="https://en.wikipedia.org/wiki/User:Paul_Stansifer/Size_comparison" class="extiw" title="en:User:Paul Stansifer/Size comparison">User:Paul Stansifer/Size comparison</a> for more details and the other licenses.