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 at 100-percent favorable. Cygnus will carry some 5,000 pounds of supplies and experiments to the International Space Station.
Live coverage on NASA TV is under way.