What is the name of the first artificial satellite launched into Earth orbit?
The first artificial satellite launched into Earth's orbit was Sputnik 1. It was launched by the Soviet Union on October 4, 1957.
Complete the following task based on the instruction and optional input provided.### Instruction:
What is the name of the first artificial satellite launched into Earth orbit?

### Output:
The first artificial satellite launched into Earth's orbit was Sputnik 1. It was launched by the Soviet Union on October 4, 1957.