Multiple choice

The first man-made object to leave the solar systam was

  1. Voyager 1

  2. Voyager 2

  3. Mariner 2

  4. Pioneer 10

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pioneer 10 was the first spacecraft to achieve the escape velocity needed to leave the solar system, having passed the orbit of Pluto in 1983.