A spiral galaxy, shaped much like our Milky Way, has been found in an era when astronomers believed such well-formed galaxies ...

The galaxy's discovery challenges our understanding of how galaxies were formed in the early period after the Big Bang.

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

Our galaxy, the Milky Way, is a beautiful barred spiral galaxy, but we will never see what it looks like from the outside. It ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

The filament of matter stretches 50 million light-years, and contains a row of galaxies 5.5 million light-years long that are ...

A newly-detected spinning galaxy filament is reshaping our understanding of cosmic structure, gas flows, and the origins of ...

New simulations reveal that the Milky Way’s odd split between two chemically distinct groups of stars isn’t a universal ...

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

R esearchers have calculated one of the most precise estimates for the expansion rate of the universe today, and it turns out ...

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make predictions.

A monster galaxy from the early universe shows that the cosmos was rich with oxygen when it was only less than 3% of its present age, astronomers have found. The discovery raises questions about how ...