The upcoming U.S.–India NISAR (NASA-ISRO Synthetic Aperture Radar) mission will observe Earth like no mission before, ...

And in its own way, the planet’s rusty red surface tells a story of destruction. Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin ...

With a radius of 3,959 miles, Earth is the fifth largest planet in our solar system, and it's the only one known for sure to have liquid water on its surface. Earth is also unique in terms of ...

Sejal, age 7, Bangalore, India The planet Jupiter has no solid ... I realize the concept of a world without a surface is ...