Multiple choice What is the full form of “IBEX”? Interstellar Boundary Explorer Mission Interstellar Boundary Explorer Medium Interstellar Boundary Explanation Mission None of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation IBEX is the Interstellar Boundary Explorer, a NASA satellite designed to study the boundary between our solar system and interstellar space。'Medium'和'Explanation'是对缩写的错误解释。