<ul><li>Scientists have used supernova archaeology to study the remains of a star that exploded long ago in deep space.</li><li>By analyzing data from NASA's Chandra X-ray Observatory, they uncovered clues about the history of the star system GRO J1655-40.</li><li>The system originally had two large stars, with one of them exploding in a supernova and forming a black hole, while the other survived and became a companion star.</li><li>Using X-ray observations, researchers were able to determine the mass and composition of the original star, demonstrating the potential of this technique for studying past stellar events.</li></ul>

Scientists use space “archaeology” to uncover secrets of a long-dead star

Discover more