Although exploration has existed as long as human beings, its peak is seen as being during the Age of Discovery when European navigators travelled around the world discovering new lands and cultures.
The term may also be used metaphorically, for example persons may speak of exploring the internet, sexuality, etc.
In scientific research, exploration is one of three purposes of research (the other two being description and explanation). Exploration is the attempt to develop an initial, rough understanding of some phenomenon.
João Fernandes Lavrador (1445? - 1501) - Portuguese explorer. First European reaching Labrador/New Found Land. Fernandes charted the coasts of Southwestern Greenland and of adjacent Northeastern North America around 1498. In 1501, Fernandes set sail again in discovery of lands and was never heard from again.
Vasco Núñez de Balboa (c. 1475 - 1519) - Spanish explorer. The first European to cross the Isthmus of Panama and view the Pacific ocean from American shores.
Francisco Vásquez de Coronado (c. 1510 - 1554) - Spanish explorer. Searched for the Seven Cities of Gold and discovered the Grand Canyon in the process.
Willem Barentsz 1550-1597 Dutch navigator and explorer, leader of early expeditions to the far north.
Pedro Fernandes de Queirós 1565-1614 Portuguese navigator. Explored the Pacific in the service of the Spanish Crown.
Luis Váez de Torres (c. 1565- ) Spanish or Portuguese navigator. Explored the Pacific in the service of the Spanish Crown.
Henry Hudson (1570 - 1611) - English explorer. Explored much of the North Atlantic, including Labrador, the coast of Greenland, and Hudson Bay. Presumed dead in a 1611 mutiny of his own crew.
Father António de Andrade (1580 - 1634) - Portuguese explorer. First European reaching Tibet. His reports were the only account of the Tibet culture and geography until the second half of the 18th century.
Alexander MacKenzie (1764-1820) Scottish-Canadian explorer who in 1789, looking for the Northwest Passage, followed the river now named after him to the Arctic Ocean and then in 1793 crossed the Rockies and reached the Pacific in 1793, thus beating Lewis and Clark by 12 years.
Alexander von Humboldt (1769 - 1859) - German explorer and scientist whose work was foundational to the field of biogeography.
Henry Morton Stanley (1841 – 1904) - Welsh journalist and explorer in central Africa best remembered for his search for David Livingstone, and upon finding him saying: "Dr. Livingstone, I presume?"
Otto Sverdrup (1854 - 1930) - Norwegianexplorer. Joined Fridtjof Nansen acoss Greenland in 1888 and captain on the Fram on the polar drift in 1893-1896 and the 2nd Fram expedition in 1898-1902. Mapped the Northenmost part of Canada in 1898-1902.
Roald Amundsen (1872 - 1928) - Norwegian explorer. He led the first successful Antarctic expedition between 1910 and 1912. He was also the first ever person to successfully traverse the North West Passage.
Hiram Bingham III (1875 - 1956) - U.S. Senator from Connecticut and explorer best known for uncovering Machu Picchu.
Robert Bartlett (1875 - 1946) - Newfoundland captain. Led over 40 expeditions to the Arctic, more than anyone before or since. Was the first to sail north of 88° N latitude.
Auguste Piccard (1884-1962), physicist, balloonist, hydronaut- Explored the stratosphere and the deep sea
Ahmed Pasha Hassanein (1889 - 1946) - Egyptian explorer, diplomat, one of two non-European winners of Gold Medal of Royal Geographical Society in 1924, King's chamberlain, fencing participant to 1924 Olympics, photographer, author and discoverer of Jebel Uweinat, and writer of "The Lost Oases" book in three languages.
Colonel Noel Andrew Croft (1906 - 1998) - held the record for the longest self-sustaining journey across the Arctic in the 1930s for 60 years.
Dr. E. Lee Spence (1947- ) - undersea explorer and pioneer underwater archaeologist: discovered numerous shipwrecks including H.L. Hunley the first submarine in history to sink an enemy ship; and the Georgiana, said to have been the most powerful Confederate cruiser.