The Caloris Basin is an impact basin. It is one of the largest impact craters in the solar system.
It was created after the heavy bombardment period and is estimated to be 3.8 billion years old.
Caloris Basin is an enormous impact crater - the largest known in our solar system - on the planet Mercury. It is more than 950 miles wide. It is believed to have been created at the end of the "heavy bombardment" period early in our solar system's history, about 3.8 - 4.0 billion years ago.
The Caloris Montes on Mercury.
You could be asking about the element Mercury or the planet Mercury. The element Mercury is probably most remarkable for being a metal which is liquid at room temperature.However, I think this is about the planet. The planet's famous feature is called the "Caloris Basin".AnswerThe first answer asked a good question regarding the "Mercury" of which you write. I'll assume it is the element mercury. I agree with the above. Also, it changes in volume quite a bit with changes in its temperature. That makes it a good filling for a thermometer. Now, I think they use alcohol. Silver colored material in a thermometer is mercury; red is alcohol of some type.Another well-known feature of mercury is that it is heavy compared to other liquids. This is detectable just by holding a container with mercury in it.I believe that it has a high surface tension; that's why it "balls up" when free to sit on a surface.Another feature is that it is a toxin found in polluted streams and thus the creatures that live in these streams. It is considered poisonous and absorbable through the skin, I think.Lastly, it will dissolve gold; keep it off your rings.
South Pole-Aitken basin - Moon - Diameter: 2,500 km http://en.wikipedia.org/wiki/Impact_crater#Largest_named_craters_in_the_Solar_System --Geoffrey A. Landis
Impact Basin / Impact Crater
A crater is a depression that is caused when an object hits a heavenly body, such as the moon. Since the moon has almost no atmosphere - and therefore no wind - the craters that have formed aren't erased over time from erosion (which has occurred here on Earth). The largest crater on the moon, the Aitken basin, is 2,500 km across and 13 km deep.
The Caloris basin is on the planet Mercury.
The Caloris Basin, also called Caloris Planitia, is a about 1,550 km (963 mi) in diameter.
Caloris Basin (also known as the Caloris Planitia) is an impact crater on Mercury about 1,550 km in diameter, known as the largest crater in the Solar System.
Mercury does.
Mercury
It is approx 1550 km.
I think the answer is the "Caloris Basin".
The main crater is Caloris Basin.
The Caloris Basin is a large impact crater found on the planet Mercury, 963 miles in diameter. Its one of the largest craters in the solar system.
Mercury doesn't have many geographically distinct features but it does have a feature called the Caloris Basin. The Caloris Basin is one of the largest meteor impact basins in the Solar System. It measures at about 1,550 kilometers or 960 miles in diameter. Since the Caloris Basin is the largest feature on Mercury it is also it's longest.
The Caloris Basin on Mercury is certainly one of the largest impact craters in the Solar System. As to the largest in the Milky Way - you'll just have to wait and see.
Caloris Basin I think is the deepest and the youngest too.