sentence2_structure: A telescope<>is used<>to make objects in space appear closer$$$A telescope<>to make<>objects in space appear closer$$$objects in space<>appear<>
sentence1: Lowell scientists are closely involved in research using telescopes in space and on the ground.
sentence2: A telescope is used to make objects in space appear closer.
question: What instrument is used to make objects in space appear closer?