Astronomers spot mysterious 'iron bar' in well-known Ring Nebula - Reuters

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1. Astronomers spot mysterious 'iron bar' in well-known Ring Nebula  Reuters
2. Cardiff University team helps find mysterious iron bar in space  BBC
3. Astronomers discover an enormous iron bar in the famous Ring Nebula: 'We definitely need to know more'  Space
4. Ring Nebula: What is mysterious iron 'bar' in space?  Sky News
5. Astronomers Spot Mysterious Bar-Shaped Cloud of Iron Inside an Iconic Nebula  Scientific American

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