Computer simulations of galaxies growing over billions of years have revealed a likely scenario for how they feed: a cosmic version of swirly straws.
When galaxies form new stars, they sometimes do so in frantic episodes of activity known as starbursts. These events were commonplace in the early Universe, but are rarer in nearby galaxies.
Peering deep into the past, astronomers using the Hubble Space Telescope have identified seven primitive galaxies that formed more than 13 billion years ago, when the universe was less than three percent of its present age.
Astronomers have pieced together the deepest-ever view of the universe, peering back more than thirteen billion years.
German astronomers have created an artificial intelligence algorithm to help chart and explain the structure and dynamics of the universe more accurately than ever before.
Volunteers in the Galaxy Zoo project have been helping to classify galaxies seen in hundreds of thousands of telescope images as spiral or elliptical - and have, along the way, found 26 which resemble the letters of the alphabet.
NASA's discovered several million new black holes - along with a thousand or so galaxies obscured by dust - using the Wide-field Infrared Survey Explorer (WISE) telescope.
Astronomers have for the first time found other groups of galaxies that are just like ours.
The biggest-ever 3D map of the universe has been released, including more than 500,000 galaxies and 100,000 stars.
Astronomers have confirmed the existence of a 'bridge' of hydrogen gas connecting two of our neighboring galaxies, indicating that they may once have brushed together.
Look out: we're headed for a crash. In, ooh, just four billion years or so our Milky Way galaxy is set to collide with neighboring Andromeda.
Astronomers using NASA's Hubble Space Telescope have found several quasars acting as gravitational lenses, making it easier to study the galaxies in which they're contained.
Astronomers analyzing data from NASA's Hubble Telescope have identified what seems to be a clump of dark matter left behind from a collision between massive clusters of galaxies.
Galaxies are running out of the basic building blocks of stars. The universe is forming fewer stars than it used to, and an Australian research team says the reason is a shortage of molecular hydrogen.
Scientists examining data from the Herschel space observatory say they've detected gigantic storms of molecular gas in the centre of many galaxies.
Many of the Milky Way's ancient stars derive from other smaller galaxies torn apart by violent galactic collisions, say researchers at Durham University.
Peering through entire galaxies as their lenses, a team of researchers has found a new way to establish the size and age of the universe.
There's slow developers everywhere, and the Hubble space telescope has discovered the astronomical equivalent: a group of small, ancient galaxies that have waited 10 billion years to get round to building a large elliptical galaxy.