Cygnus X-1 (abbreviated Cyg X-1) is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole.

Read more in the app

Dawn of the Cygnus: A Cosmic Caravan’s Voyage to the Starry Outpost

Cygnus’ Fiery Farewell: Space Freighter To Burn Up in Earth’s Atmosphere

Watch Cygnus cargo spacecraft leave the space station Friday morning

NASA Sets Coverage for Northrop Grumman Cygnus Departure from Station

Speedrunning Star Formation in the Cygnus X Region

Cygnus Space Freighter Arrives at ISS With Only One Working Solar Array

Cygnus cargo ship arrives at space station with only one working solar panel

Northrop Grumman’s NG-18 Cygnus spacecraft, the SS Sally Ride, was successfully captured by the ISS this morning with just one solar array deployed.

Cygnus Spacecraft Prepares for Rendezvous With International Space Station

Cygnus Space Freighter Launches to ISS – One of Two Solar Arrays Fails To Deploy

Cygnus cargo ship trying to reach ISS with only 1 solar array deployed

Cygnus cargo ship is trying to reach space station with only 1 solar array deployed

Northrop Grumman Names Next Cygnus Mission After Space Pioneer Sally Ride

Don’t Miss: Planet Viewing, Perseids Outlook, and Flying With Cygnus the Swan

Cygnus Boosts the International Space Station for the First Time. NASA Can Now Potentially Keep the Station Aloft Without Russia’s Progress Spacecraft

Northrop Grumman’s Cygnus supply ship departs space station

The US can now perform ISS reboosts without Russia's help, thanks to Cygnus spacecraft | Until now, ISS reboosts have been performed by robotic Russian Progress spacecraft.

Northrop Grumman's Cygnus cargo ship boosts International Space Station's orbit

NASA to Cover Northrop Grumman Cygnus Departure from Space Station

Astronaut Crew Studies Aging in Space, Harvests Edible Plants Before Cygnus Reboost