Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. German astronomer ...

This chart shows whether Johan Conrad Greive’s total sales are going up, and if so, whether this is because more artworks by the artist have been offered and sold or because more high-value artworks ...

A life-sized hologram of Gert-Johan Coetzee sketching ... each impaled with physical sketches representing discarded doubts and transformed visions. These hand-drawn and printed pieces weren ...