How many moons does Mars have?
Mars has two moons, they were named Phobos and Deimos by the American astronomer Asaph Hall, who discovered them in August 1877.
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 many moons does Mars have?
### Input: 
### Response: Mars has two moons, they were named Phobos and Deimos by the American astronomer Asaph Hall, who discovered them in August 1877.