If we did find traces of life beyond Earth, we might learn more about the beginnings of its evolution here.' Peredur Williams Source: The Observatory: A Review of Astronomy 'The book is a stimulating ...

That's because these biographers of the primordial deal in increments of millions and even billions of years as they struggle to reconstruct our planet's life ... back to Earth's beginnings ...

Cosmic dust may have delivered elements crucial for life to early Earth. Our planet is relatively poor in several elements that are necessary for the chemistry of life, but the dust that ...