Some experts have argued that microbial life originated during the Archaean period, which dawned in a haze of methane and ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." How life emerged on rocky planets such as Earth (and possibly Mars) has been an enduring mystery. It most ...

Intro -- Preface -- References -- Contents -- 1 Why Hadean? -- Abstract -- 1.1 Introduction -- 1.2 Organization of This Book -- 1.2.1 A Brief Overview -- 1.2.2 Chapter Themes -- 1.3 Defining the ...

An artistic reconstruction of Earth during the Hadean eon (~4.5 billion years ago). Intense volcanic activity, heat from accretion, and frequent impacts kept the young Earth in a molten state. This ...

Olivine cumulate from the Weltevreden Formation showing that although these cumulates are significantly altered, they still contain preserved unaltered olivine cores (microscopic image taken in ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: In an investigation to find out what sparked life on ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: In an investigation to find out ...