Our Solar System is home to eight extraordinary planets, each with its own unique features, mysteries, and beauty. This cosmic journey takes you from the Sun-scorched surface of Mercury to the icy ...

Mount Everest may be the tallest mountain on Earth, but it's nothing compared to the towering giants scattered across our ...

Perpetual Planet Ocean Expeditions is embarking on a series of trailblazing explorations from seashore to seafloor and from pole to pole. National Geographic Explorers will study the global ocean ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

The solar wind pushes some of the gas and dust away from the comet, forming those beautiful tails we see. A comet actually ...

For centuries, glaciers have sat like frosty crowns atop slumbering volcanoes, keeping Earth’s fury tucked safely beneath ...

Astronomers have spotted centimeter-sized “pebbles” swirling around two infant stars 450 light-years away, revealing the raw ...

A team of scientists put together a global database of submarine mud volcanoes. Orders of magnitude more are still bubbling, ...

As glaciers melt around the world, long-dormant volcanoes may be waking up beneath the ice. New research reveals that massive ...

Despite being covered in impact craters that could potentially send pieces of the planet into space, we have never found a piece of Mercury. Until, just maybe, now.

The new discovery by geoscientists from the University of Aberdeen provides the strongest evidence yet that some of ...