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Cygnus NG-19 resupplying Canadian science studies on the International Space Station

The Cygnus cargo vessel

The Cygnus cargo vessel captured by Canadarm2 on the International Space Station. (Credit: NASA)

Northrop Grumman's NG-19 mission is set to launch tonight from the Mid-Atlantic Regional Spaceport on Wallops Island, Virginia. The Cygnus robotic resupply spacecraft is scheduled to dock to the International Space Station two days later.

This time, the cargo will carry replacement materials for the Bio-Monitor controller and Bio-Monitor wearables for two Canadian experiments: Space Health and Vascular Calcium. Space Health studies the effects of space flight on astronauts' cardiovascular systems. Vascular Calcium, as part of NASA's CIPHER program, aims to determine whether one year in space increases the arterial stiffness and insulin resistance that is already observed in six-month space flights.

Live coverage of Cygnus's launch will begin on NASA TV on , starting at 8:31 pm ET.

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