Shortly after his return from the first voyage, Cook was promoted in August 1771 to the rank of commander.
In 1772, he was commissioned to lead another scientific expedition on behalf of the Royal Society, to search for the hypothetical Terra Australis.
On his first voyage, Cook had demonstrated by circumnavigating New Zealand that it was not attached to a larger landmass to the south.
Although he charted almost the entire eastern coastline of Australia, showing it to be continental in size, the Terra Australis was believed to lie further south.
Despite this evidence to the contrary, Alexander Dalrymple and others of the Royal Society still believed that a massive southern continent should exist.

Cook commanded HMS Resolution on this voyage, while Tobias Furneaux commanded its companion ship, HMS Adventure.
Cook's expedition circumnavigated the globe at an extreme southern latitude, becoming one of the first to cross the Antarctic Circle on 17 January 1773.
In the Antarctic fog, Resolution and Adventure became separated.
Furneaux made his way to New Zealand, where he lost some of his men during an encounter with Māori, and eventually sailed back to Britain, while Cook continued to explore the Antarctic, reaching 71°10'S on 31 January 1774.

Cook almost encountered the mainland of Antarctica but turned towards Tahiti to resupply his ship.
He then resumed his southward course in a second fruitless attempt to find the supposed continent.
On this leg of the voyage, he brought a young Tahitian named Omai, who proved to be somewhat less knowledgeable about the Pacific than Tupaia had been on the first voyage.
On his return voyage to New Zealand in 1774, Cook landed at the Friendly Islands, Easter Island, Norfolk Island, New Caledonia, and Vanuatu.

Before returning to England, Cook made a final sweep across the South Atlantic from Cape Horn and surveyed, mapped, and took possession for Britain of South Georgia, which had been explored by the English merchant Anthony de la Roché in 1675.
Cook also discovered and named Clerke Rocks and the South Sandwich Islands ("Sandwich Land").
He then turned north to South Africa and from there continued back to England.
His reports upon his return home put to rest the popular myth of Terra Australis.

Cook's second voyage marked a successful employment of Larcum Kendall's K1 copy of John Harrison's H4 marine chronometer, which enabled Cook to calculate his longitudinal position with much greater accuracy.
Cook's log was full of praise for this time-piece which he used to make charts of the southern Pacific Ocean that were so remarkably accurate that copies of them were still in use in the mid-20th century.

Upon his return, Cook was promoted to the rank of post-captain and given an honorary retirement from the Royal Navy, with a posting as an officer of the Greenwich Hospital.
He reluctantly accepted, insisting that he be allowed to quit the post if an opportunity for active duty should arise.
His fame extended beyond the Admiralty; he was made a Fellow of the Royal Society and awarded the Copley Gold Medal for completing his second voyage without losing a man to scurvy.
Nathaniel Dance-Holland painted his portrait; he dined with James Boswell; he was described in the House of Lords as "the first navigator in Europe".
But he could not be kept away from the sea.
A third voyage was planned, and Cook volunteered to find the Northwest Passage.
He travelled to the Pacific and hoped to travel east to the Atlantic, while a simultaneous voyage travelled the opposite route.
Shortly after his return from the first voyage, Cook was promoted in August 1771 to the rank of commander. In 1772, he was commissioned to lead another scientific expedition on behalf of the Royal Society, to search for the hypothetical Terra Australis. On his first voyage, Cook had demonstrated by circumnavigating New Zealand that it was not attached to a larger landmass to the south. Although he charted almost the entire eastern coastline of Australia, showing it to be continental in size, the Terra Australis was believed to lie further south. Despite this evidence to the contrary, Alexander Dalrymple and others of the Royal Society still believed that a massive southern continent should exist.
Cook commanded HMS Resolution on this voyage, while Tobias Furneaux commanded its companion ship, HMS Adventure. Cook's expedition circumnavigated the globe at an extreme southern latitude, becoming one of the first to cross the Antarctic Circle on 17 January 1773. In the Antarctic fog, Resolution and Adventure became separated. Furneaux made his way to New Zealand, where he lost some of his men during an encounter with Māori, and eventually sailed back to Britain, while Cook continued to explore the Antarctic, reaching 71°10'S on 31 January 1774.
Cook almost encountered the mainland of Antarctica but turned towards Tahiti to resupply his ship. He then resumed his southward course in a second fruitless attempt to find the supposed continent. On this leg of the voyage, he brought a young Tahitian named Omai, who proved to be somewhat less knowledgeable about the Pacific than Tupaia had been on the first voyage. On his return voyage to New Zealand in 1774, Cook landed at the Friendly Islands, Easter Island, Norfolk Island, New Caledonia, and Vanuatu.
Before returning to England, Cook made a final sweep across the South Atlantic from Cape Horn and surveyed, mapped, and took possession for Britain of South Georgia, which had been explored by the English merchant Anthony de la Roché in 1675. Cook also discovered and named Clerke Rocks and the South Sandwich Islands ("Sandwich Land"). He then turned north to South Africa and from there continued back to England. His reports upon his return home put to rest the popular myth of Terra Australis.
Cook's second voyage marked a successful employment of Larcum Kendall's K1 copy of John Harrison's H4 marine chronometer, which enabled Cook to calculate his longitudinal position with much greater accuracy. Cook's log was full of praise for this time-piece which he used to make charts of the southern Pacific Ocean that were so remarkably accurate that copies of them were still in use in the mid-20th century.
Upon his return, Cook was promoted to the rank of post-captain and given an honorary retirement from the Royal Navy, with a posting as an officer of the Greenwich Hospital. He reluctantly accepted, insisting that he be allowed to quit the post if an opportunity for active duty should arise. His fame extended beyond the Admiralty; he was made a Fellow of the Royal Society and awarded the Copley Gold Medal for completing his second voyage without losing a man to scurvy. Nathaniel Dance-Holland painted his portrait; he dined with James Boswell; he was described in the House of Lords as "the first navigator in Europe". But he could not be kept away from the sea. A third voyage was planned, and Cook volunteered to find the Northwest Passage. He travelled to the Pacific and hoped to travel east to the Atlantic, while a simultaneous voyage travelled the opposite route.
James Cook