Photos: Atlas 5 rocket aims for International Space Station

The International Space Station’s first three-man crew moved in on Nov. 2, 2000, 15 years ago Monday, the first of 45 expeditions to date that have logged a decade and a half of continuous human presence in low-Earth orbit.

In the last few months, teams of SpaceX engineers working on the flat coastal plains of South Texas and in a nondescript industrial yard on Florida’s Space Coast have been building two futuristic-looking stainless steel rockets — or Starships — prototypes for a reusable vehicle the company claims could one day ferry people to Mars.

Follow the unclassified portion of the Atlas 5 rocket’s ascent to space from Cape Canaveral’s Complex 41 launch pad with the U.S. National Reconnaissance Office’s NROL-61 satellite. Launch is scheduled for Thursday at 8:37 a.m. EDT (1237 GMT).