Massive stars have a layered structure, similar to an onion. The outermost layers predominantly comprise the lightest elements; as the layers move inward, the elements become heavier and heavier until ...

Astronomers have decoded the hidden past of a distant red giant star by listening to tiny vibrations in its light, revealing clues of a dramatic cosmic history. The star, which quietly orbits a ...

Astronomers have identified a massive red giant star with a newly detected companion that appears to be stirring up trouble in the system, reshaping gas and dust in ways that could end in a dramatic ...