Watch private Cygnus freighter arrive at the ISS early Aug. 6

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Northrop Grumman’s robotic Cygnus freighter will arrive at the International Space Station (ISS) early Tuesday morning (Aug. 6), and you can watch the rendezvous live.

The Cygnus, which launched atop a SpaceX Falcon 9 rocket on Sunday (Aug. 4), is scheduled to be captured by the station’s robotic arm on Tuesday at 3:10 a.m. (0710 GMT).

You can watch the action live here at Space.com, courtesy of NASA. Coverage will begin Tuesday at 1:30 a.m. EDT (0530 GMT).

A Northrop Grumman Cygnus cargo spacecraft approaches the International Space Station on Feb. 1, 2024, with the station’s robotic arm in view. (Image credit: NASA)

This Cygnus — named the S.S. Richard “Dick” Scobee, after the commander of the tragic STS-51-L mission of the space shuttle Challenger — is carrying nearly 8,200 pounds (3,720 kilograms) of food, scientific gear and other supplies to the ISS.

Related: Facts about Cygnus, Northrop Grumman’s cargo ship

Among the experiments is Rotifer-B2, which will study how spaceflight affects DNA repair mechanisms in the rotifer species Adineta vaga.  

“These tiny but complex organisms are known for their ability to withstand harsh conditions, including radiation doses 100 times higher than human cells can survive,” NASA officials wrote in a description of the current cargo mission, which is known as NG-21, because it’s the 21st ISS flight for a Cygnus vehicle.

Rotifer-B2 “could improve the general understanding of DNA damage and repair mechanisms for applications on Earth,” they added.

The S.S. Richard “Dick” Scobee hasn’t had a perfectly smooth ride to the ISS so far. Shortly after deploying from the Falcon 9’s upper stage on Sunday, the freighter missed a planned engine burn. The Cygnus then aborted the rescheduled burn 50 minutes later after detecting slightly lower-than-expected pressure readings.

But Northrop Grumman engineers evaluated the data and confirmed that the pressure readings were acceptable after all, NASA officials announced in an update today (Aug. 5). Cygnus has now performed two engine burns and is on course for its ISS rendezvous, they added. 

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