You might find yourself puzzled by a strange-looking gadget or a mysterious stain, wondering what it could possibly be. But ...

When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

And that’s the reason this 3D printed coaxial lighting setup was built — to make quality photographs of small objects a snap. The objects of [Peter Lin]’s photographic desire are coins ...