For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

The space between those bright points of light is, of course, filled with inky blackness. Some astronomers have wondered about that all that dark space — about how dark it really is.

A team led by the Italian National Institute for Astrophysics discovered the most distant known fossil galaxy — a relic of ...

By using light to emulate the structure of space-time, researchers can better understand black holes – and the exotic objects ...

A ring of light surrounding the center of NGC 6505, a nearby galaxy, is captured by the European Space Agency's Euclid telescope. ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C ...

My telescope, set up for astrophotography in my light-polluted San Diego backyard, was pointed at a galaxy unfathomably far from Earth. My wife, Cristina, walked up just as the first space photo ...

How much light is in the universe? A lot. There, you can stop reading now. No, wait, stay. You should read the rest of this, because it's pretty fun.