Explained: The Distinction Between Outer Space and Deep Space.

Outer space refers to anything beyond Earth, while deep space starts beyond our moon and can refer to things beyond our solar system entirely. The Kármán line, an invisible line around 50 to 60 miles above Earth's surface, marks the boundary between Earth and outer space. Voyager 1, launched by NASA in the 1970s, is the furthest humans have reached into deep space, currently floating more than 14 billion miles from Earth. The terms matter for keeping track of things, as NASA has an entire communications setup to check in with all deep space missions, appropriately named the Deep Space Network.