The mysterious origin of water on Earth
Either the Moon-forming impact was insufficient to vapourize all existing water or brought to Earth by some other means.
Either the Moon-forming impact was insufficient to vapourize all existing water or brought to Earth by some other means.
Scientists believe that before 4 billion years ago, the earth’s surface has melted in the final stage of its creation.
Finer-scale, dendritic networks of valleys are distributed across considerable swaths of the topography elsewhere on the Martian surface.
The book precisely identifies the target areas for exploring non-conventional groundwater resources in highly deformed and fractured shield rocks – though focusing on Arabian Peninsula.
Earthquakes and the earth’s internal dynamics have long been the focus of geologists and researchers.