Do you know what a planet is? Guess what... astronomers are not quite sure what a planet is! ...Read more
Mercury, the planet nearest the Sun, is the second 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
Do you know how Neptune was discovered?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
xSalinity : The percent of salt in saltwater
Click on the word to find out!
Scientists who study plants in the Sonoran Desert are worried about global warming. Desert winters have become warmer and drier over the years, and climate changes have pushed the arrival of winter rains...Read more