How large is the Earth?
The Earth's radius is 6378 kilometers, and its mass is 5.972 x 10^24 kilograms. Its surface area is about 510 million square kilometers.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: How large is the Earth?
### Input: 
### Response: The Earth's radius is 6378 kilometers, and its mass is 5.972 x 10^24 kilograms. Its surface area is about 510 million square kilometers.