Explore Solar System Discoveries
Mercury's orbit is so close to the Sun that it is difficult to see by ground-based observers. ...Read more
Venus is one of the brightest objects in the sky, so it is clearly visible to the naked eye. ...Read more
Mars is much like Venus-- it's very bright and therefore easily spotted in the night sky. ...Read more
Jupiter is the largest planet in our solar system. It is also one of the brighter objects ...Read more
Like the inner planets and Jupiter, Saturn is clearly visible in the night sky. The ancient ...Read more
Astronomer William Herschel is credited with the discovery of Uranus in 1781. He was using ...Read more
If you had a quiz question in school that asked what year Neptune was discovered, you'd probably ...Read more
After the discovery of Neptune in 1846, mathematical theory suggested that there still might ...Read more
Ceres is the largest asteroid in the main asteroid belt. It was classified as a "dwarf ...Read more
Haumea is a dwarf planet in our Solar System. Haumea is the fifth object officially classified ...Read more
More about Solar System Discoveries
Did you know?
Did you know that there may be 200 or so dwarf planets
in the solar system, out to the Kuiper Belt
Do you know how far away the Oort cloud is?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
xAlluvium : Alluvium is loose gravel, sand, silt, or clay deposited by streams.
Click on the word to find out!
Global warming is a hot topic, and it's causing concern for scientists studying winter annuals in the Sonoran Desert. While desert winters have become warmer and drier over the years, climate changes have...Read more