Supermassive black holes are now believed to exist in the centres of most if not all massive galaxies.

No massive galaxy at this distance has ever been observed to be so compact.

At that rate, the galaxy needs only 50 million years to grow into an equivalent of the most massive galaxy ever observed.

One massive galaxy discovered in 1987 is named Malin-1.

The orange light reveals the final buildup of massive galaxies about 8 billion to 10 billion years ago.

This suggests that supermassive black holes arose very early in the Universe, inside the first massive galaxies.

According to computer models, several of the most massive galaxies originated in structures like this.

He is currently leading an international team to locate and study the first massive galaxies formed in the Universe.

The most massive galaxies in the sky are giant elliptical galaxies.

The massive objects that create the lenses are usually huge clusters of massive galaxies.