The countdown is progressing smoothly for the 6:22 p.m. EDT launch of Orbital Sciences Corp.’s Antares rocket and Cygnus cargo spacecraft. There are no technical concerns with the rocket or spacecraft being worked. The weather for this evening’s launch is predicted to be 97 percent favorable. Cygnus will carry some 5,000 pounds of supplies and experiments to the International Space Station. NASA TV coverage begins at 5:30 p.m.
This graphic previews some of the milestones that occur following the Antares rocket’s liftoff, leading up through separation of the Cygnus CRS-3 spacecraft.