Astronomers thought they’d made a mistake when stars in a nearby galaxy didn’t seem to rotate — but the unusual pattern ...

The Small Magellanic Cloud, a dwarf galaxy about 200,000 light-years from the solar system, can be seen with the naked eye ...

with little to no heavy elements such as oxygen. The detection implies that stars had already lived and died within this galaxy, producing oxygen and dispersing it throughout its structure in a ...

These reactions produce very large amounts of energy, and elements produced during these reactions are emitted into the universe. As a star ages and its mass and internal structure change—such ...