Physics star

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• 2. The explosion of a massive star after fusion in its core ceases and the matter surrounding its core collapses on to the core and rebounds. (9)
• 3. The highly compressed core of a massive star that remains after a supernova explosion. (7, 4)
• 4. A star that has expanded and cooled, resulting in it becoming red and much larger and cooler than it was before it expanded. (3, 5)
• 5. A star that has collapsed from the red giant stage to become much hotter and denser than it was. (5, 5)
• 6. The concentration of dust clouds and gas in space that forms a star. (9)