Lyman-Alpha blobs (for real, that's what they're called) are huge clouds of hydrogen gas, sometimes hundreds of thousands of light-years across. They glow at a wavelength that doesn't make sense.

Volcanic eruptions at Earth’s surface have significant consequences. Smaller ones can scare tourists on Mount Etna or disrupt air traffic. Giant, large-scale eruptions can have more serious impacts.

Although we humans do like to think that we know everything, every now and then Mother Nature proves that we most certainly ...

For all we’ve learned about places far away in outer space, we may have barely scratched the surface of the places lying deep within Earth. As a result, there’s a lot of information we seem to be ...