One hundred degrees might seem hot, when you’re sweating through your shirt in July—but on a cosmic scale it barely registers. The Sun itself is over 15 million degrees; and in a hottest-object ...

The James Webb Space Telescope (JWST) has identified GLASS-z13, a galaxy potentially dating back 13.5 billion years, making it a candidate for the oldest and most distant galaxy observed, surpassing ...

Every now and again I’ll get a weird thought in my head that sits there demanding an answer. Sometimes it’s trivial, and sometimes it sounds silly but then leads to some fun insights. This time my ...

There's no questioning the fact that the universe is weird. Just look outside and you'll see all manner of strange, self-reproducing flora and fauna, crawling upon a blue ball of semimolten rock ...

Based on what we know of our universe, many cosmologists believe it all began when the Big Bang spat a bunch of matter into being. But a lot of questions remain. That’s why a Canadian astrophysicist ...

Light is fast. In fact, it is the fastest thing that exists, and a law of the universe is that nothing can move faster than light. Light travels at 186,000 miles per second (300,000 kilometers per ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter. The biggest objects in the universe are clusters ...

Eighteen-year-old YouTuber Christopher Slayton recently crafted entire planets, black holes, galaxies, and, well, the entire cosmos. And he used nothing but the blocks within Minecraft. In the more ...

Using a worldwide network of radio telescopes including the Green Bank Telescope in West Virginia, astronomers have discovered a mysterious object in the distant universe. A million times the mass of ...

Astronomers have identified what could be the brightest, most luminous object in the universe — a quasar that emits light 500 trillion times more intense than that of our sun. Quasars are dazzling ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

The biggest objects in the universe are clusters of galaxies, such as the supercluster we live in right now - and including Abell 370, which was captured in a sprawling glittery space-scape by the ...