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 ...

A groundbreaking study led by astronomers from the Chalmers University of Technology has unveiled an extraordinary phenomenon in space: a red supergiant star named DFK 52 expelled a vast bubble of gas ...

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but they came close enough to leave a permanent mark on the thin mist of gas that ...