Browsing: Universe

When you look in the mirror, the image you see looks a lot like you—not exactly the same, because when you raise your right hand, your mirror-self raises its left. What’s more, the mirror image is merely an assemblage of reflected light, without a physical body behind it. Despite these differences, you can see an […]

Our Universe is vast and mostly empty. Even if many of the billions of planets we suspect are out there have life, most of the cosmos is uninhabitable, and those worlds are unreachable by any means we know. That’s just within our galaxy, which is one of about 100 billion in the part of the […]