"Imagine that you shoot a cloud with a gun; the energy of the bullet can be as large as you wish, and the cloud won't care. Yet we see less clouds of gas where there are black holes." When you ...

An international team of astronomers has identified three ultra-massive galaxies—each nearly as massive as the Milky Way—already in place within the first billion years after the Big Bang. The ...

The James Webb Space Telescope (JWST) is the largest and most powerful space telescope built to date. Since it was launched in December 2021 it has provided groundbreaking insights. These include ...

A large protocluster of galaxies that existed 12.6 billion years ago, first discovered with the Subaru Telescope, has been ...

In the intriguing realm of star-forming galaxies, the key factor isn't the total amount of gas but rather its strategic distribution within the galaxy. Researchers at the International Centre for ...

It is as humbling as it is motivating to think about how much we still have to learn about the universe. My collaborators and I have just tackled one of astrophysics’ enduring mysteries: how massive ...

Tiny galaxies orbiting the Milky Way may hold clues to one of cosmology’s biggest mysteries. Ultra-faint dwarf galaxies are ...