Galaxies

Astronomers have mapped a 20,000-light-year-long fountain of gas blasting from a nearby galaxy and polluting intergalactic space at 450 times the top speed of a jet fighter.

The unexplained mass of a remarkably massive galaxy suggests that dark matter interacts with itself, according to new observations by the James Webb Space Telescope.

The stars of a possible ultra-faint dwarf galaxy, known as UMa3/U1, could be held in place by the gravitational glue of dark matter.

Using the MeerKat radio telescope, astronomers discovered a "gold rush" of galaxies in just three hours, including three joined by their gas content.

The Gaia space telescope has discovered two ancient stellar streams woven through the heart of the Milky Way, which were present 12 billion years ago.

With the help of artificial intelligence, amateur scientists have discovered more than 400,000 new galaxies.

A new map spanning 500 light-years reveals the interaction between magnetic fields and dust in the Milky Way that will become the building blocks of stars.

The James Space Telescope has used its NIRCam and MIRI instruments to capture two dynamic views of the star-forming region NGC 604 in the Triangulum Galaxy.

Astronomers have observed a so-called standard candle supernova generating clouds of cosmic dust, bringing us a step closer to understanding the life and death cycle of stars.

Astronomers may finally know why some death shrouds created by the deaths of sun-like stars lack the element sulfur.