A Russian expedition led by Fabian Gottlieb von Bellingshausen and Mikhail Petrovich Lazarev discovers the Antarctic continent, approaching the Antarctic coast.

Fabian Gottlieb Thaddeus von Bellingshausen (Russian: , romanized: Faddy Faddevich Bellinsguzen; 20 September [O.S. 9 September] 1778 25 January [O.S. 13 January] 1852) was a Russian naval officer, cartographer and explorer, who ultimately rose to the rank of admiral. He participated in the First Russian circumnavigation of the globe and subsequently became a leader of another circumnavigation expedition that discovered the continent of Antarctica. Like Otto von Kotzebue and Adam Johann von Krusenstern, Bellingshausen belonged to the cohort of prominent Baltic German navigators who helped Russia launch its naval expeditions.Bellingshausen was born on Osel Island. He started his service in the Russian Baltic Fleet, and after distinguishing himself joined the First Russian circumnavigation of the Earth in 18031806, serving on the merchant ship Nadezhda under the captaincy of Adam Johann von Krusenstern. After the journey he published a collection of maps of the newly explored areas and islands of the Pacific Ocean. Subsequently, he commanded several ships of the Baltic and Black Sea Fleets.As a prominent cartographer, Bellingshausen was appointed to command the Russian circumnavigation of the globe in 18191821, intended to explore the Southern Ocean and to find land in the proximity of the South Pole. Mikhail Lazarev prepared the expedition and was made Bellingshausen's second-in-command and the captain of the sloop Mirny, while Bellingshausen himself commanded the sloop Vostok. During this expedition Bellingshausen and Lazarev became the first explorers to see the land of Antarctica on 27 January 1820 (New Style). They circumnavigated the continent twice and never lost each other from view. Thus they disproved Captain Cook's assertion that it was impossible to find land in the southern ice-fields. The expedition discovered and named Peter I Island, Zavodovski, Leskov and Visokoi Islands, the Antarctic Peninsula and Alexander Island (Alexander Coast), and made other discoveries in the tropical waters of the Pacific.

Made counter admiral on his return, Bellingshausen participated in the Russo-Turkish War of 18281829. Promoted to vice-admiral, he again served in the Baltic Fleet in 1830s, and from 1839 he was the military governor of Kronstadt, where he died. In 1831 he published the book on his Antarctic travels, called Double Investigation of the Southern Polar Ocean and the Voyage Around the World ( ). Russians remember him as one of their greatest admirals and explorers. Multiple geographical features and locations in the Antarctic, named in honor of Bellingshausen, commemorate his role in the exploration of the southern polar region.

The Russian Empire (or Imperial Russia) was an empire that extended across Eurasia from 1721, succeeding the Tsardom of Russia following the Treaty of Nystad that ended the Great Northern War. The rise of the Russian Empire coincided with the decline of neighboring rival powers: the Swedish Empire, Poland–Lithuania, Persia, the Ottoman Empire, and Qing China. The Empire lasted until the Republic was proclaimed by the Provisional Government that took power after the February Revolution of 1917. The third-largest empire in history, at one point stretching over three continents—Europe, Asia, and North America—the Russian Empire was surpassed in size only by the British and Mongol empires. With 125.6 million subjects, according to the 1897 census, it had the third-largest population in the world at the time, after Qing China and India. Like all empires, it featured great economic, ethnic, linguistic, and religious diversity.

From the 10th through the 17th centuries, the land was ruled by a noble class, the boyars, above whom was a tsar, who later became an emperor. Tsar Ivan III (1462–1505) laid the groundwork for the empire that later emerged. He tripled the territory of his state, ended the dominance of the Golden Horde, renovated the Moscow Kremlin, and laid the foundations of the Russian state. The House of Romanov ruled the Russian Empire from its beginning in 1721 until 1762. Its matrilineal branch of patrilineal German descent, the House of Holstein-Gottorp-Romanov, ruled from 1762 until the end of the empire. At the beginning of the 19th century, the empire extended from the Arctic Ocean in the north to the Black Sea in the south, from the Baltic Sea on the west into Alaska and Northern California, in North America, on the east. By the end of the 19th century, it would acquire Central Asia and parts of Northeast Asia.

Emperor Peter I (1682–1725) fought numerous wars and expanded an already vast empire into a major European power. He moved the capital from Moscow to the new model city of Saint Petersburg, which was largely built according to Western design. He led a cultural revolution that replaced some of the traditionalist and medieval social and political mores with a modern, scientific, Western-oriented, and rationalist system. Empress Catherine the Great (1762–1796) presided over a golden age; she expanded the state by conquest, colonization, and diplomacy, while continuing Peter I's policy of modernization along Western European lines. Emperor Alexander I (1801-1825) played a major role in defeating Napoleon's ambitions to control Europe, as well as constituting the Holy Alliance of conservative monarchies. Russia further expanded to the west, south, and east, becoming one of the most powerful European empires of the time. Its victories in the Russo-Turkish Wars were checked by defeat in the Crimean War (1853–1856), which led to a period of reform and intensified expansion in Central Asia. Emperor Alexander II (1855–1881) initiated numerous reforms, most dramatically the emancipation of all 23 million serfs in 1861. His policy in Eastern Europe officially involved the protection of Eastern Orthodox Christians within the Ottoman Empire. This was one factor leading to Russia's entry into World War I in 1914, on the side of the Allied powers against the Central Powers.

The Russian Empire functioned as an absolute monarchy on the ideological doctrine of Orthodoxy, Autocracy, and Nationality until the Revolution of 1905, when a nominal semi-constitutional monarchy was established. It functioned poorly during World War I, leading to the February Revolution and the abdication of Emperor Nicholas II, after which the monarchy was abolished. In the October Revolution, the Bolsheviks seized power, leading to the Russian Civil War. The Bolsheviks executed the imperial family in 1918 and established the Soviet Union in 1922 after emerging victorious from the civil war.