Earth, the largest and densest rocky planet, was formed about 4.5 billion years ago. The Earth's ...Read more
The atmosphere is a mixture of nitrogen (78%), oxygen (21%), and other gases (1%) that surrounds ...Read more
The Earth has a magnetic field with north and south poles. The magnetic field of the Earth ...Read more
The Earth's one natural satellite, the Moon, is more than one quarter the size of Earth itself ...Read more
Do you wonder what Earth's Polar Regions are like? Where do polar bears live? Where do penguins ...Read more
Warm near the equator and cold at the poles, our planet is able to support a variety of living ...Read more
Water is found in many places on Earth including on the surface of the planet, within rocks ...Read more
What is life? Why is there life on Earth, but not on any other planets in the solar system ...Read more
The United Nations estimated that between 1994-2015, there were 6,873 natural disasters worldwide, ...Read more
Did you know?
Did you know that many different
cultures had myths
about Earth goddesses and gods
Did you know that greenhouse
gases are increasing rapidly in the Earth's atmosphere?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Magnetic polarity reversal
xMagnetic polarity reversal : A magnetic polarity reversal is a change of the earth's magnetic field to the opposite polarity. This has occurred at irregular intervals during geologic time.
Click on the word to find out!
A magnitude-8.1 earthquake and tsunami that killed 192 people last year in Samoa, American Samoa and Tonga was in fact a triple-whammy. The 8.1 "great earthquake" concealed and triggered two...Read more