Gallery: Antares rocket explodes

NASA astronaut Jessica Meir took control of the International Space Station’s Canadian-built robot arm Monday to capture a Northrop Grumman Cygnus supply ship carrying crew provisions, spacewalking gear to repair an aging particle physics experiment, tech demo satellites for the U.S. military, and an oven to bake the first cookies in space.

A Northrop Grumman Antares rocket rolled out to its launch pad on Virginia’s Eastern Shore early Tuesday, setting the stage for liftoff Saturday on a resupply flight to the International Space Station that will debut an upgraded launcher and Cygnus cargo vehicle capable of hauling heavier payloads into orbit.

Peering down at the Earth’s atmosphere from a research window aboard the International Space Station, a new science instrument launching Tuesday will compose unprecedented characterizations of the chemical makeup of shooting stars.