What is another word for suborbital?
Pronunciation: [sˈʌbɔːbˌɪtə͡l] (IPA) 
The term suborbital relates to a trajectory that is below or under the orbit of an object. Some synonyms for the word suborbital include low-earth, near-space, and sub-atmospheric. Low-earth is an ideal term when discussing suborbital flights near the earth's atmosphere. Near-space describes the boundary into space that starts at an altitude of about 20km and up to 100km. Sub-atmospheric refers to vehicles that do not enter or linger in space but are still capable of achieving high altitude for short periods. Other synonyms for suborbital may depend on the context of the discussion, but these are the most commonly used terms.
