Avengers (1963) #255

"The Legacy of Thanos!"

Under the direction of Vision, Captain Marvel travels to Thanos' old starship "Sanctuary II" at the edge of our solar system. While there, she encounters a small group of mercenaries attempting to procure the vessel. Suspicious of their motives, she decides to stay and keep an eye on them. Back on Earth, Vision is being held accountable by the United States government for his attempt to take over the planet through it's worldwide computer systems. He and the Scarlet Witch leave the ranks of the Avengers.