Assertion: space shuttle's mission | /r/Synonym | orbital test vehicle
Facets:
Source sentences:
text: At 6:43 a.m. EDT (1043 GMT) today (Aug. 26), the robotic X-37B sailed past the program mark of 717 days, 20 hours and 42 minutes, which was set by the previous mission, known as Orbital Test Vehicle 4 (OTV-4).