Tag Archives: inner

When the solar system was first organizing itself, a disk of gas and dust took shape around the sun’s central mass. It eventually sorted itself into the system of planets we see today. But there are things we don’t know about how that happened. One observation that has been challenging …

The inner core of our planet is between 1 and 1.3 billion years old, according to new research led by the University of Texas at Austin and Carnegie Institution for Science. Earth’s internal structure: dense solid metallic core, viscous metallic outer core, mantle and silicate based crust. Image credit: NASA. …