Gallery: Antares rocket explodes

A Northrop Grumman Cygnus cargo ship arrived at the International Space Station on Monday, delivering nearly four tons of supplies and experiments to the research lab and its crew, including a $23 million titanium toilet and a high-definition virtual reality camera planned for use on a future spacewalk.

Disconnected from the International Space Station berthing port and then cast free by the robotic arm, the commercial Cygnus cargo craft flew away Friday after successfully restarting U.S. resupply service to the outpost.

The NASA TV broadcast of the launch of an Atlas 5 rocket carrying the Orbital ATK Cygnus cargo ship bound for the International Space Station on March 22, 2016. (Membership Required)