![Metalens](https://petapixel.com/assets/uploads/2023/03/Single-Flat-Lens-Used-to-Photograph-the-Moon-for-the-First-Time-Ever-1-300x157.jpg)
Single Flat Lens Used to Photograph the Moon for the First Time Ever
A Penn State-led research team has developed a flat, single-lens telescope that was able to capture clear images of the moon. Known as a metalens, it achieved far greater resolution and imaging distance than any metalens before it.