Explore Solar System Discoveries
![](/images/icons/systemdiscovery_mercury.jpg)
Mercury's orbit is so close to the Sun that it is hard to see from the ground. This is why ...
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![](/images/icons/systemdiscovery_venus.jpg)
Venus is one of the brightest objects in the sky. It is always found near the Sun. It rises ...
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![](/images/icons/systemdiscovery_mars.jpg)
Mars is a bright, red object in the sky. It is very easy to see, which means that even people ...
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![](/images/icons/systemdiscovery_jupiter.jpg)
Jupiter is the biggest planet in our solar system! It's also very bright in the sky. We don't ...
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![](/images/icons/systemdiscovery_saturn.jpg)
Saturn is the second largest planet in our solar system. It is also very bright in the sky. ...
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![](/images/icons/systemdiscovery_uranus.jpg)
Uranus was discovered in 1781 by William Herschel. He argued with his friends over its name. ...
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![](/images/icons/systemdiscovery_neptune.jpg)
Neptune was discovered in 1846. But it wasn't discovered using a telescope. Scientists used ...
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![](/images/icons/systemdiscovery_pluto.gif)
The ninth planet in our solar system is Pluto. It was discovered in 1930 by Clyde Tombaugh. ...
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![](/images/icons/systemdiscovery_ceres.jpg)
Ceres is the largest asteroid in the main asteroid belt. It was classified as a "dwarf ...
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![](/images/icons/systemdiscovery_haumea.jpg)
Haumea is a dwarf planet in our Solar System. Haumea is officially the fifth dwarf planet. ...
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More about Solar System Discoveries
Did you know?
Did you know that a
moon has been found to orbit the asteroid Eugenia?
Did you know that comets have two tails, not one?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Spreading ridgexSpreading ridge : An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust.
Click on the word to find out!
Research Highlights
The Earth's mantle is a rocky, solid shell that is between the Earth's crust and the outer core. The mantle is made up of many different reservoirs that have different chemical compositions. Scientists...
Read more![](/olpa/images/baffin_mantle_small.jpg)