In an investigation to find out what sparked life on Earth, researchers have discovered that RNA formed through surprisingly ...

Conditions on Earth for the first 500 million years after it formed may have been surprisingly similar to the present day, complete with oceans, continents and active crustal plates. This alternate ...

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 ...

The general consensus up until the late 20th century was that after Earth’s formation 4.54 billion years ago, the planet was a hellish place covered in magma. But now scientists say conditions on ...

Asteroids and comets repeatedly smashed into the early Earth and covered the planet's surface with molten rock during its earliest days, researchers have revealed. However, they say there may have ...

Los Angeles may be a city obsessed with youth, but it is also home to the world’s largest collection of Hadean zircons — the oldest known material on Earth. Hadean zircons are tiny — about the same ...

Conditions on Earth during its first 500 million years may have been cool enough to form oceans of water instead of being too hot for life to form. This alternate view of Earth's first geologic eon, ...