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 ...

Saturn’s were the first rings seen through telescopes from Earth ... of the distant Solar System that we know about, such as the Kuiper Belt. It's all good and well knowing facts about space ...

There's a lot we don't know about our home planet and solar system. The post Can You Answer These Basic Questions About Earth ...

A collection of down-to-Earth facts about our planet and its place in the solar system. This collection introduces the Sun as the main source of light and heat on Earth. It explains that the Earth ...

Darwin traced the system of the earth and moon back to a ... At the same time, solar tidal friction may be adequate to explain the facts that one of the satellites of Mars and the particles ...

Our solar system passed through a vast wave of gas and dust around 14 million years ago, dimming Earth’s view of the night sky. The wave may even have left traces in our planet’s geological ...

As is general knowledge, we track a day on Earth as lasting ... is the greatest in the solar system at 97.77 degrees. Along ...

They are stored in the Oort cloud, a huge, diffuse sphere of cometary nuclei in the far reaches of the solar system ... for life were delivered to Earth by comets. Scherb's carbon atom ...

Primordial helium from the beginning of the solar system may be stuck inside Earth's solid core, new research suggests. The findings could have implications for a long-standing debate about how ...

Helium-3, an isotope formed during the solar system's birth, may be trapped in Earth's core, a study suggests. Researchers at the University of Tokyo found that helium can mix with iron at extreme ...