Moon is the first collaboration between Chinese artist Ai Weiwei and Danish-Icelandic artist Olafur Eliasson. A web-based artwork, Moon is a shared platform that invites users to leave their own mark, drawn or written, on a virtual moon’s surface. Since its launch at the Falling Walls conference in November 2013, this interactive lunar landscape has amassed over 80,000 entries, growing from a blank white canvas to a dense collection of diverse responses. Each contribution has created a small but distinctive change to a developing landscape – highlighting the importance of individual expression amongst collective participation. Moon’s open call for creative input is a powerful statement about the potential for ideas to connect people across vast distances and break through political, social, and geographical boundaries in the Internet age.