Written by the former chief historian of NASA, the book examines the evolution of our cosmic understanding—from early civilizations to the present day ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

The key to unlocking the secrets of distant planets starts right here on Earth. Researchers at Tohoku University, the ...

Fastest Known Planetary System May Have Been Pushed by Our Galaxy’s Supermassive Black Hole ...

This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged.

planets, moons, asteroids, and comets. Briefly introduce the concept of gravity and how it keeps the solar system in balance. 2. Activity 1: Solar System Model (30 minutes) Hands-on Activity ...