Gallery: Antares rocket explodes

A year after a launch mishap left Orbital ATK’s Cygnus supply ship without a ride to the International Space Station, company officials say the cargo delivery system is on the verge of a comeback, thanks to deals with United Launch Alliance and a decision to redesign its Antares booster with new rocket engines.

A Northrop Grumman Cygnus supply ship arrived at the International Space Station on Monday with more than 8,000 pounds of cargo, including new astronaut sleeping quarters, parts for the station’s toilet, and numerous biomedical and technology experiments.

A forecast of low ceilings, thick clouds and rainy weather Thursday has led NASA and Northrop Grumman officials to push back the launch of an Antares rocket and a space station-bound supply ship from Virginia’s Eastern Shore to Friday morning.