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 ...

A peculiar object discovered by the James Webb Space Telescope just 700 million years after the Big Bang could reveal the ...

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

Black holes are places where gravity is so powerful that nothing — not even light — can escape. Rather than being empty, black holes are chock full of matter that gets squeezed into a teensy space.

Space is dark, which makes finding bright things like stars pretty darn easy. It also makes it possible for high-powered telescopes to spot things that are very, very far away, and researchers now ...

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 ...

University of Leicester provides funding as a member of The Conversation UK. Active galaxies are some of the most luminous and impressive objects in the sky. They tend to be massive, distant and emit ...

Astronomers might have seen the very first stars in the universe. If so, these are incredible stars, some 1,000 times as massive as the sun. The alternative is just as interesting: The objects might ...

Things that make you go whoa! When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The universe is a big place, and it's full of big things. Planets, ...

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 ...

The fabric of expanding space as illustrated over cosmic time. One of the consequences of the expansion is that the farther away a galaxy is, the faster it appears to recede from us, and that the ...