Supernova by Graur, Or
15,45 €
Supernovae are the explosions of stars. We owe our existence to supernovae-they give us iron for our blood and calcium for our bones. But supernovae may also have caused a mass extinction event on Earth 2.6 million years ago.
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![Produktbild - The Trap Minerals of Nova Scotia [microform] by Edwin 1850 or 51-1907 Gilpin](https://i.ebayimg.com/thumbs/images/g/59oAAeSwrz1oLty0/s-l140.jpg)
