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Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey to the south, Serbia and North Macedonia to the west, and Romania across the Danube river to the north. It covers a territory of and is the tenth largest within the European Union and the sixteenth-largest country in Europe by area. Sofia is the nation's capital and largest city; other major cities include Plovdiv, Varna, and Burgas.

Azerbaijan, officially the Republic of Azerbaijan, is a transcontinental and landlocked country at the boundary of Western Asia and Eastern Europe. It is a part of the South Caucasus region and is bounded by the Caspian Sea to the east, Russia's republic of Dagestan to the north, Georgia to the northwest, Armenia and Turkey to the west, and Iran to the south. Baku is the capital and largest city.

The Sun is the star located at the centre of the Solar System. It is a massive sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies. It is the main source of energy for life on Earth. The Sun has been an object of veneration in many cultures and a central subject of astronomical research since antiquity.

Romania is a country in Southeast and Central Europe. It lies on the lower course of the Danube, north of the Balkan Peninsula, and on the northwestern shore of the Black Sea. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to the east, and the Black Sea to the southeast. It is the twelfth-largest country in Europe by area, covering , and the sixth-most populous member state of the European Union, with nearly 20 million inhabitants. The capital, largest city and economic centre is Bucharest. Other major cities include Cluj-

Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Kenya to the south, South Sudan to the west, and Sudan to the northwest. Ethiopia covers a land area of . , it has around 135 million inhabitants, making it the 14th-most populous country. The national capital and largest city, Addis Ababa, lies several kilometres west of the East African Rift that splits the country into the African and Somali tectonic plates.

Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and various islands and islets in the Caribbean Sea. It comprises an area of , with a population estimated at 31.8 million in 2025. The capital and largest urban agglomeration is Caracas. The continental territory is bordered on the north by the Caribbean Sea and the Atlantic Ocean, on the west by Colombia, Brazil on the south, Trinidad and Tobago to the north-east, and on the east by Guyana. Venezuela consists of 23 states, the Capital District,

Ireland, also known as the Republic of Ireland, is a country in Northwestern Europe. It consists of 26 of the 32 counties of the island of Ireland, with a population of about 5.4 million. Its capital and largest city is Dublin, on the eastern side of the island, with a population of over 1.5 million. The sovereign state shares its only land border with Northern Ireland, which is part of the United Kingdom. It is otherwise surrounded by the Atlantic Ocean, with the Celtic Sea to the south, St George's Channel to the south-east and the Irish Sea to the east. It is a unitary, parliamentary republic. The legislature, the Oireachtas, consists of a lower house, Dáil Éireann; an upper house, Seanad Éireann; and an elected president who serves as the largely ceremonial head of state, but with some important powers and duties. The head of government is the Taoiseach, elected by the Dáil and appointed by the president, who appoints other government ministers.

Moldova, officially the Republic of Moldova, is a landlocked country in Eastern Europe, with an area of and a population of 2.38 million. Moldova is bordered by Romania to the west and Ukraine to the north, east, and south. The unrecognised breakaway state of Transnistria lies across the Dniester river on the country's eastern border with Ukraine. Moldova is a unitary parliamentary representative democratic republic with its capital in Chișinău, the country's largest city and main cultural and commercial centre.

Zimbabwe, officially the Republic of Zimbabwe, is a landlocked country in Southeast Africa, between the Zambezi and Limpopo River, bordered by South Africa to the south, Botswana to the southwest, Zambia to the north, and Mozambique to the east. The capital and largest city is Harare, and the second largest is Bulawayo.

Christianity is an Abrahamic monotheistic religion, which states that Jesus is the Son of God and rose from the dead after his crucifixion, whose coming as the messiah (Christ) was prophesied in the Old Testament and chronicled in the New Testament. It is the world's largest and most widespread religion with over 2.3 billion followers, comprising around 28.8% of the world population. Its adherents, known as Christians, are estimated to make up a majority of the population in 120 countries and territories.

Namibia, officially the Republic of Namibia, is a country in Southern Africa. It borders the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the northeast, approximating a quadripoint, Zimbabwe lies less than 200 metres (660 feet) away along the Zambezi river near Kazungula, Zambia. Namibia's capital and largest city is Windhoek.

Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contains the Galápagos Islands in the Pacific, about west of the mainland. The country's capital is Quito and its largest city is Guayaquil.

Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. In simple terms, the country's geography consists of a western Andean region and tropical lowlands to the east and north. More in detail, the country features a diverse geography, including the vast Amazonian plain, the Gran Chaco, temperate valleys, the high-altitude Altiplano plateau, snow-capped peaks, and mountains, encompassing a wide range of climates and biomes across its regions and cities. It includes part of the Pantanal, the largest tropical wetland in the world, along i

Ivory Coast, also known as Côte d'Ivoire and officially as the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest city and economic centre is the port city of Abidjan. It borders Guinea to the northwest, Liberia to the west, Mali to the northwest, Burkina Faso to the northeast, Ghana to the east, and the Atlantic Ocean's Gulf of Guinea to the south. With 31.5 million inhabitants in 2024, Ivory Coast is the third-most populous country in West Africa. Its official language is French, and indigenous languages are also widely used, including Bété, Baoulé, Dyula, Dan, Anyin, and Cebaara Senufo. In total, there are around 78 languages spoken in Ivory Coast. The country has a religiously diverse population, including numerous followers of Islam, Christianity and traditional faiths often entailing animism.

Benin, officially the Republic of Benin, formerly known as Dahomey, is a country in West Africa. Benin is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the northwest, and Niger to the northeast. The majority of its population lives on the southern coastline of the Bight of Benin, part of the Gulf of Guinea in the northernmost tropical portion of the Atlantic Ocean. The capital is Porto-Novo, and the seat of government is in Cotonou, the most populous city and economic capital. Benin covers an area of , and its population in was estimated to be approximately million. It is

Tajikistan, officially the Republic of Tajikistan, is a landlocked country in Central Asia. Dushanbe is its capital and most populous city with a population of 1.24 million people. Tajikistan borders Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east and is narrowly separated from Pakistan and Pakistan-administered Gilgit-Baltistan by Afghanistan's Wakhan Corridor. It has a population of more than 10.9million people.

Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated along the Atlantic Ocean coast. It borders Mauritania to the north, Mali to the east, Guinea to the southeast and Guinea-Bissau to the southwest. Senegal nearly surrounds the Gambia, a country occupying a narrow strip of land along the banks of the Gambia River, which separates Senegal's southern region of Casamance from the rest of the country. It also shares a maritime border with Cape Verde. The capital and largest city of Senegal is Dakar.

Guinea, officially the Republic of Guinea, is a coastal country in West Africa. It borders the Atlantic Ocean to the west, Guinea-Bissau to the northwest, Senegal to the north, Mali to the northeast, Ivory Coast to the southeast, and Sierra Leone and Liberia to the south. It is sometimes referred to as Guinea-Conakry, after its capital Conakry, to distinguish it from other territories in the eponymous region, such as Guinea-Bissau and Equatorial Guinea. Guinea has a population of 14 million and an area of .

Haiti, officially the Republic of Haiti, is a country in the Caribbean on the island of Hispaniola in the Caribbean Sea, east of Cuba and Jamaica and south of the Bahamas. It occupies the western side of the island, which it shares with the Dominican Republic. Haiti is the third largest country in the Caribbean by area, and with an estimated population of 11.4 million, it is the most populous Caribbean country. The capital and largest city is Port-au-Prince.

El Salvador, officially the Republic of El Salvador, is a country in Central America. It is bordered on the northeast by Honduras, on the northwest by Guatemala, and on the south by the Pacific Ocean. El Salvador's capital and largest city is San Salvador. El Salvador's population in 2024 was estimated to be 6 million.

Dominican Republic is a country on the Caribbean island of Hispaniola in the Greater Antilles of the Caribbean Sea in the North Atlantic Ocean. It shares a maritime border with Puerto Rico to the east and a land border with Haiti to the west, occupying the eastern five-eighths of Hispaniola which, along with Saint Martin, is one of only two islands in the Caribbean shared by two sovereign states. In the Antilles, the country is the second-largest nation by area after Cuba at 48,671 square kilometers (18,792 sq mi) and second-largest by population after Haiti with approximately 11.4 million people in 2024, of whom 3.6 million reside in the metropolitan area of Santo Domingo, the capital city.

the Sun, its planets and their moons

The Bahamas, officially the Commonwealth of the Bahamas, is an archipelagic country located within the Lucayan Archipelago in the Atlantic Ocean. The country comprises more than 3,000 islands, cays and islets in the Atlantic Ocean, located north of Cuba and north-west of the island of Hispaniola and the Turks and Caicos Islands, southeast of the US state of Florida and east of the Florida Keys. The capital and largest city is Nassau on the island of New Providence. The Royal Bahamas Defence Force describes the Bahamas' territory as encompassing 470,000 km2 (180,000 sq mi) of ocean space.

Antigua and Barbuda is an archipelagic country in the Caribbean composed of Antigua, Barbuda, and numerous other small islands. Antigua and Barbuda has a total area of 440 km2, making it one of the smallest countries in the Caribbean. The country is mostly flat, with the highest points on Antigua being in the Shekerley Mountains and on Barbuda the Highlands. The country has a tropical savanna climate, with pockets of tropical monsoon in Antigua's southwest. Its most populated city is St. John's, followed by All Saints and Bolans. Most of the country resides in the Central Plain that stretches from St. John's to English Harbour.

Kiribati, officially the Republic of Kiribati, is an island country in the Micronesia sub-region of Oceania in the central Pacific Ocean. The state comprises 32 atolls and other islands and one remote raised coral island, Banaba. Its total land area is dispersed over of ocean. The spread of the country's islands, from Banaba in the west to Kiritimati in the east straddles the equator and the 180th meridian. The International Date Line goes around Kiribati and swings far to the east, almost reaching 150°W. This brings Kiribati's easternmost islands, the southern Line Islands south of Hawaii, in

thumb|upright=1.35|Augustine Volcano (Alaska) during its eruptive phase on January 24, 2006

alt=|thumb|upright=1.5|Cloudscape over Borneo, taken by the [[International Space Station]]

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Cancer is a group of diseases involving uncontrolled cell growth typically resulting in tumors with the potential to invade or spread to other parts of the body. These malignant tumors contrast with benign tumors, which do not spread. Over 100 types of cancers affect humans.

leader of the Soviet Union from 1985 to 1991 (1931–2022)

Geneva ( ; ) is the second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the capital of the Republic and Canton of Geneva. Geneva is a global city, an international financial centre, and a worldwide centre for diplomacy, which has led to it being called the "Peace Capital".

species of atoms having the same number of protons in the atomic nucleus and the same chemical properties, but not necessarily the same mass, or the same stability (or half-lifetime if they are unstable)

Abraham (originally Abram) is the common Hebrew patriarch of the Abrahamic religions, including Judaism, Christianity, and Islam. In Judaism, he is the founding father who began the covenantal relationship between the Jewish people and God; in Christianity, he is the spiritual progenitor of all believers, whether Jewish or non-Jewish; and in Islam, he is a link in the chain of Islamic prophets that begins with Adam and culminates in Muhammad. Abraham is also revered in other Abrahamic religions such as the Baháʼí Faith and the Druze faith.

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Tin is a chemical element; it has the symbol Sn () and atomic number 50. A metallic-gray metal, tin is soft enough to be cut with little force, and a bar of tin can be bent by hand with little effort. When bent, a bar of tin makes a sound, the so-called "tin cry", as a result of twinning in tin crystals.

Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west (with the Ural River usually forming the southernmost portion of its western boundary) to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states since the lengthy conquest of Siberia, which began with the fall of the Khanate of Sibir in 1582 and concluded with the annexation of Chukotka in 1778. Siberia is vast and sparsely populated, covering an area of over – about three-quarters of Russia's total area, but home to

thumb|upright=1.5|Strokes of cloud-to-ground lightning strike the Mediterranean Sea off of Port-la-Nouvelle in southern France.

An asteroid is a minor planet—an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet—that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids). Asteroids are rocky, metallic, or icy bodies with no atmosphere, and are broadly classified into C-type (carbonaceous), M-type (metallic), or S-type (silicaceous). The size and shape of asteroids vary significantly, ranging from small rubble piles under a kilometer across to Ceres, a dwarf planet almost 1000 km in diameter. A body is classified as a comet, not an

Sex, more formally known as sexual intercourse, coitus, or copulation, is an intimate social activity typically involving the insertion of the erect male penis inside the female vagina and followed by thrusting motions for erotic pleasure, biological reproduction, or both. This specific type of sex is also known as vaginal intercourse. However, other forms of penetrative sexual intercourse also exist, including anal sex, oral sex, fingering and penetration by use of a dildo, and vibrators. The desire for these activities is grounded in natural human instinct and they involve physical intimacy between two or more people, usually enacted by humans solely for physical-emotional pleasure, sometimes contributing to human bonding.

The vagina (: vaginas or vaginae) is the elastic, muscular reproductive organ of the female genital tract through which mammals copulate and give birth. In humans, it extends from the vulval vestibule to the cervix (neck of the uterus). The vaginal introitus is normally partly covered by a thin layer of mucosal tissue called the hymen. The vagina also channels menstrual flow, which occurs in humans and closely related primates as part of the menstrual cycle.

Jainism ( ), also known as Jain Dharma, is an Indian religion which teaches a path toward spiritual purity and enlightenment through disciplined non-violence (') to all living creatures. The tradition is spiritually guided by twenty-four ' (ford-makers), supreme teachers who have conquered the cycle of rebirth and attained omniscience ('). The core of Jain philosophy is established on three ethical pillars: ' (nonviolence), ' (non-absolutism or many-sided reality), and ' (non-possession). While its ultimate spiritual goal is ' (liberation from '), these ethical principles have historically fos

thumb|City of Port-au-Prince as viewed by NASA thumb|300px|Map of Hispaniola and [[Puerto Rico, .]]

Pisa ( ; ) is a city and comune (municipality) in Tuscany, Central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for the Leaning Tower of Pisa, the city contains more than twenty other historic churches, and several medieval and Renaissance palaces, mostly facing each other on the avenues along the Arno ("Lungarno"). Much of the city's architecture was financed from its history as one of the Italian maritime republics.

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official currency of Japan

Milwaukee is the most populous city in the U.S. state of Wisconsin. It is located on the western shore of Lake Michigan at the confluence of the Milwaukee, Menomonee, and Kinnickinnic Rivers. Milwaukee is the 31st-most populous city in the United States and the fifth-most populous city in the Midwest, with a population of 577,222 at the 2020 census. The Milwaukee metropolitan area has over 1.57 million residents and ranks as the 40th-largest metropolitan area in the nation. It is the county seat of Milwaukee County.

war between North and South Korea, 1950–1953

Prussian geographer, naturalist and explorer (1769-1859)

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thumb|A filtered cigarette A cigarette is a thin cylinder of tobacco rolled in thin paper for smoking. The cigarette is ignited at one end, causing it to smolder, and the resulting smoke is orally inhaled via the opposite end. Cigarette smoking is the most common method of tobacco consumption. The term cigarette refers to a tobacco cigarette, but the word is sometimes used to refer to other substances, such as a cannabis cigarette or a herbal cigarette. A cigarette is distinguished from a cigar by its usually smaller size, use of processed leaf, different smoking method, and paper wrapping, wh

capital of North Dakota, United States and seat of Burleigh County