Archaeologists stunned as excavation yields previously unknown medieval underground chamber

One of the explanations behind the mysterious chamber points to the haunting realities of medieval Germany

Mystery of 'little red dots' in space is solved as astronomers confirm 'violent forces' at hand

The strange dots vanished without explanation around 12 billion years ago - and scientists now think they know why

World's largest iceberg turns BLUE as Nasa scientists issue stark warning

A-23A as transformed from snowy white to a striking cyan hue

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