A breathtaking artwork that puts the entire planet in one room has landed in Cardiff, and it is the kind of thing you really need to see for yourself.
Gaia, created by Bristol-based artist Luke Jerram, is a massive detailed sculpture of the Earth that hangs in space and invites people to walk around it, look up at it, and genuinely feel something about the planet we all share. The installation is now on display at Techniquest in Cardiff Bay, bringing together art and science in a way that is hard to pull off but somehow works perfectly here.
Jerram has been touring Gaia around the world for years, and the response everywhere has been the same. People walk in, look up, and go quiet. There is something about seeing the Earth floating in front of you, rendered in stunning NASA imagery at a scale of roughly one to one million, that just hits differently to looking at a photo on a screen.
The artist himself describes the project as a way of giving people what he calls an overview effect, that sense of perspective that astronauts talk about when they see the Earth from space for the first time. You suddenly understand how fragile it is, how connected everything on it is, and how strange it is that billions of people are all living on this one spinning rock together.
For Techniquest, a science discovery centre that has been a fixture of Cardiff Bay for decades, hosting Gaia feels like a natural fit. The centre has always tried to make science feel accessible and exciting rather than dry and academic, and an installation like this does exactly that. You do not need to know anything about orbital mechanics or climate science to feel moved standing underneath a giant glowing Earth.
Jerram is no stranger to this kind of large-scale immersive work. He is also known for his Museum of the Moon installation, another touring piece that has appeared in cathedrals, festivals and public spaces across the world. That one, as the name suggests, features a detailed replica of the lunar surface hanging overhead. Both projects share the same core idea, which is that putting a familiar but unreachable object in a room with people changes how they relate to it.
What makes Gaia particularly interesting is the conversation it opens up between art and science. Jerram has spoken about working closely with scientists and using real data and imagery to make sure the piece is as accurate as possible. It is not just a pretty object, it is a scientifically informed one. The surface detail comes from NASA satellite imagery, and the scale is carefully calculated.
But Jerram is also clear that the emotional response is the point. Science can tell us everything about the Earth, its composition, its atmosphere, its history, but sometimes it takes art to make people actually feel something about that information. Standing underneath Gaia, looking up at the swirling clouds over the Atlantic or the brown expanse of the Sahara, is the kind of experience that sticks with you.
For Cardiff and Wales more broadly, having an installation of this calibre on show is a real moment. Techniquest draws visitors from across the region and beyond, and Gaia is the kind of exhibit that will bring in people who might not normally think of themselves as science centre visitors. It crosses over into the kind of experience that people share on social media, talk about with friends, and come back to see again.
If you are anywhere near Cardiff Bay while Gaia is on display, it is well worth making the trip. Bring the kids, bring your mates, or just go on your own and spend some time looking up at the world from a completely new angle.