Explore the 25 Most Massive Objects in the Universe, from supermassive black holes to galaxy walls. Uncover the cosmic giants shaping our cosmos. Discover ...

In a planet-forming disk of gas and dust around a young, nearby star, two huge objects recently collided at high speed. The colossal impact was positively apocalyptic in size, vaporizing enough ...

Scientists may have glimpsed some of the oldest material in the universe. According to a new, yet-to-be-peer-reviewed study, researchers found an unidentified object nearly 13.5 billion light years ...

A new ultramassive black hole has been discovered, and we’re not even going to try to get our heads around its scale. The enormous object observed for the first time is 30 billion times bigger than ...

Hey, remember those two giant blobs inside the Earth’s core that were puzzling scientists? Well, now it turns out that they seem to be on the move. Those giant ancient structures, called mantle plumes ...