This story appears in the May 2005 issue of National Geographic magazine ... had revealed something even more astounding: The universe is swiftly expanding, carrying the galaxies outward.

This story appears in the May 2018 issue of National Geographic magazine. Juna Kollmeier wants to understand the substance of the universe: What forms space structures like galaxies, supermassive ...

Five years later, after tracking the movements of these spiraling disks, Hubble and his assistant, Milton Humason, had revealed something even more astounding: The universe is swiftly expanding ...

This story appears in the July 2009 issue of National Geographic magazine ... Evidently the Earth was a small part of a big universe, not a big part of a small one. And soon, sure enough, Galileo ...

These small vortices of darkness may have swirled to life soon after the universe formed with the big bang, some 13.7 billion years ago, and then quickly evaporated. Astronomers also suspect that ...

In all its forms—visible and invisible—it saturates the universe. Light is more than ... the answer from the world's largest laser, the National Ignition Facility. NIF is under construction ...

The visible universe—including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries ...

There's a lot hiding in the universe's dark corners. Interstellar dust clouds and inky stretches of deep space can appear dull to ordinary telescopes. But to a car-size telescope 26 million miles ...

As NATIONAL GEOGRAPHIC reported in June 2004 ... "Plasma is the most common state of matter in the universe," says one physicist, "but it's also the most chaotic and the least easily controlled." ...

This story appears in the August 2017 issue of National Geographic magazine ... and Grumium are actually the names of two stars in the universe. Along with 225 other unusual-sounding monikers ...

Because the universe's oldest stars are only 10 billion to 20 billion years old there are no known black dwarfs—yet. Estimating how long white dwarfs have been cooling can help astronomers learn ...