Explore Planets

It may surprise you, but astronomers don't really have a good definition of a "planet". Because ...
Read more

Mercury, the planet nearest the Sun, is also the smallest planet in the Solar System. Only ...
Read more

Fair but inhospitable Venus, a "Sister" planet to the Earth that is very different from our ...
Read more

Earth, our home planet, is a beautiful blue and white ball when seen from space. ...
Read more

Mars, Earth's outer neighbor, is the fourth planet from the Sun. Mars' bright appearance and ...
Read more

Jupiter is the largest planet in the solar system. When approached from afar, its fantastic ...
Read more

Saturn, the sixth planet from the Sun, has the most spectacular set of rings in the solar system. ...
Read more

Uranus, the seventh planet from the Sun, has its spin axis almost in the plane of its orbit ...
Read more

Neptune, the eighth and furthest planet from the Sun, is a very cold place. Its bluish color ...
Read more

In 2006 the International Astronomical Union (IAU) approved a new classification scheme for ...
Read more
Did you know?
Did you know that the
Maya and the
Aztecs were early observers of
Venus?
Did you know that the Phoenix Mars Lander landed on Mars on 25 May, 2008?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Ozone layerxOzone layer : A range of altitudes in Earth's stratosphere which has a higher concentration of ozone molecules.
Click on the word to find out!
Research Highlights
Researchers have found a primitive Earth mantle reservoir on Baffin Island in the Canadian Arctic. Geologist Matthew Jackson and his colleagues from a multi-institution collaboration report the finding--the...
Read more