Colonized by Spain, the land that is now New Mexico became U.S. territory as part of the Gadsen Purchase in 1853, though New Mexico did not become a U.S. state until 1912. During World War II, New Mexico was the site of the top-secret Manhattan Project, in which top U.S. scientists raced to create the first atomic bomb, which was tested at the Trinity Bomb site, near Alamagordo, on July 16, 1945. In 1947, Roswell, New Mexico, became a topic of speculation about extraterrestrial life when a local farmer discovered unidentified debris on his property, which some believed was the remains of a crashed alien spacecraft. Visitors to New Mexico frequent attractions like the Very Large Array telescope in Socorro and the historic city of Santa Fe, which artist Georgia O'Keeffe famously called home.
More to Explore
On July 16, 1945, scientists from the top-secret nuclear development program known as the Manhattan Project exploded the first atomic bomb at the Trinity test site at Alamogordo, New Mexico.
The United States' victory in the Mexican-American War led to the acquisition of more than 500,000 square miles of Mexican territory extending westward from the Rio Grande to the Pacific Ocean.
Long before Columbus, another group of people discovered America: the nomadic ancestors of modern Native Americans.
Stretching more than 3,000 miles from the Atlantic to the Pacific, the United States of America is comprised of 50 states, each with its own unique traditions and history.
Did You Know?
The first atomic bombs were developed and tested in New Mexico during World War II. Los Alamos National Laboratory, which was established for that purpose in 1943, continues to serve as one of the country’s foremost research institutions.
Date of Statehood: January 6, 1912
Capital: Santa Fe
Population: 2,059,179 (2010)
Size: 121,590 square miles
Nickname(s): Land of Enchantment
Motto: Crescit Eundo (“It Grows as it Goes”)
Tree: Piñon Pine
Bird: Greater Roadrunner
- Constructed in 1610, the Palace of the Governors in Santa Fe is the oldest seat of government in the United States.
- On July 16, 1945, the world's first atomic bomb was tested at the Trinity Site in central New Mexico. The bomb was the creation of the Manhattan Project, which had been commissioned to build a nuclear weapon in 1942 after receiving intelligence that Germany was developing an atomic bomb of its own. Residents felt the 19-kiloton explosion as far as 160 miles away.
- When a rancher discovered unusual debris in a sheep pasture outside of Roswell in July 1947, Air Force officials claimed it was the remains of a crashed weather balloon. Years later, a series of test dummy experiments designed to improve pilots’ chance for survival when falling from high altitudes reinforced the view of many that aliens and UFOs were the source of the mysterious occurrences. The town has become a tourist destination for those interested in extraterrestrials ever since.Originating in 1972, the Albuquerque International Balloon Fiesta attracts hundreds of thousands of visitors each October who come to witness the more than 600 colorful hot air balloons ascend into the air.
- White Sands National Monument contains the largest gypsum dune field in the world. The result of water evaporating from transitory lakes with a high mineral content, gypsum deposits are windswept into picturesque white sand dunes spanning 275 square miles.
- The Spanish language spoken by close to a quarter of a million people throughout New Mexico and southern Colorado is an ancient dialect that is largely Castilian in origin.
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