What were galaxies like in the early universe? This is what a recent study published in Nature Astronomy hopes to address as ...

Right above you is the sky – or as scientists would call it, the atmosphere. It extends about 20 miles (32 kilometers) above the Earth. Floating around the atmosphere is a mixture of molecules – tiny ...

What if outer space isn’t empty, but behaves like a thick, slow-moving fluid? Anew study suggests just that, and it could ...