Private Cygnus cargo ship departs space station
A private cargo spacecraft cast off from the International Space Station
he departure occurred an hour later than planned to avoid potential encounters
NASA astronaut Jessica Watkins radioed to Mission Control after Cygnus' departure.
Piers Sellers is leaving on a high note. Just a few days before its planned departure
the freighter fired its main engine on June 25 to boost the altitude of the ISS.
The maneuver was a milestone moment, showing that Cygnus craft can handle ISS reboosts
"It also demonstrates the enormous capability Cygnus offers the ISS and future space