Explore Earth

Earth, the largest and densest rocky planet, was formed about 4.5 billion years ago. The Earth's ...
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The atmosphere is a mixture of nitrogen (78%), oxygen (21%), and other gases (1%) that surrounds ...
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The Earth has a magnetic field with north and south poles. The magnetic field of the Earth ...
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The Earth's one natural satellite, the Moon, is more than one quarter the size of Earth itself ...
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Do you wonder what Earth's Polar Regions are like? Where do polar bears live? Where do penguins ...
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Warm near the equator and cold at the poles, our planet is able to support a variety of living ...
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Water is found in many places on Earth including on the surface of the planet, within rocks ...
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What is life? Why is there life on Earth, but not on any other planets in the solar system ...
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The United Nations estimated that between 1994-2015, there were 6,873 natural disasters worldwide, ...
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Did you know?
Did you know that most of the
Earth's
clouds
and
weather
are found in
lowest
level of the Earth’s atmosphere?
Did you know that the ionosphere
makes radio
communication possible?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Orographic liftxOrographic lift : Occurs when an air mass is forced to rise over geographic relief from a lower elevation. As the air mass rises it expands and cools adiabatically, which can raise the relative humidity to 100%, create clouds and precipitation.
Click on the word to find out!
Research Highlights
A new study has found that a mixing of two different types of magma is the key to the historic eruptions of Mount Hood, Oregon's tallest mountain, and that eruptions often happen in a relatively short...
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