The <a href="https://en.wikipedia.org/wiki/Flammarion_engraving" class="extiw" title="en:Flammarion engraving">Flammarion engraving</a> is a <a href="https://en.wikipedia.org/wiki/wood_engraving" class="extiw" title="en:wood engraving">wood engraving</a> by an unknown artist that first appeared in <a href="https://en.wikipedia.org/wiki/Camille_Flammarion" class="extiw" title="en:Camille Flammarion">Camille Flammarion</a>'s <i>L'atmosphère: météorologie populaire</i> (1888). The image depicts a man crawling under the edge of the sky, depicted as if it were a solid hemisphere, to look at the mysterious <a href="https://en.wikipedia.org/wiki/Empyrean" class="extiw" title="en:Empyrean">Empyrean</a> beyond. The caption translates to "A medieval missionary tells that he has found the point where heaven and Earth meet..."
<span lang="en">Anonymous</span><span style="display:none">Unknown author</span>
1888
<a href="https://en.wikipedia.org/wiki/Camille_Flammarion" class="extiw" title="en:Camille Flammarion">Camille Flammarion</a>, <i>L'Atmosphere: Météorologie Populaire</i> (Paris, 1888), <i>pp.</i> 163