Across
- 2. President/Star Wars. 2 words no spaces.
- 6. an American astronaut and aeronautical engineer who in 1969 became the first person to walk on the Moon. He was also a naval aviator, test pilot, and university professor. Armstrong was born and raised in Wapakoneta, Ohio. 2 words no spaces.
- 7. an American former astronaut, engineer and fighter pilot. He made three spacewalks as pilot of the 1966 Gemini 12 mission. He was the Lunar Module Eagle pilot on the 1969 Apollo 11 mission and became the second person to walk on the Moon after mission commander Neil. 2 words no spaces.
- 10. an economic and political system in which a country's trade and industry are controlled by private owners for profit. 1 word.
- 13. also known as the October Crisis in Cuba, or the Caribbean Crisis, was a 13-day confrontation between the governments of the United States and the Soviet Union, when American deployments of nuclear missiles in Italy and Turkey were matched by Soviet deployments of nuclear missiles in Cuba. 3 words no spaces
- 16. a thermonuclear weapon, fusion weapon, or a second-generation nuclear weapon design. Its greater sophistication affords it vastly greater destructive power than first-generation nuclear bombs, a more compact size, a lower mass, or a combination of these benefits. 2 words no spaces.
- 17. a doctrine of military strategy and national security policy which posits that a full-scale use of nuclear weapons by an attacker on a nuclear-armed defender with second-strike capabilities would cause the complete annihilation of both the attacker and the defender. 3 words no spaces.
Down
- 1. a Soviet pilot and cosmonaut who, aboard the first successful crewed spaceflight, became the first human to journey into outer space. Travelling on Vostok 1, Gagarin completed one orbit of Earth on 12 April 1961, with his flight taking 108 minutes. 2 words no spaces.
- 3. an arms race competition for supremacy in nuclear warfare between the United States, the Soviet Union, and their respective allies during the Cold War. 2 words no spaces.
- 4. a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and needs. 1 word.
- 5. a 20th-century competition between two Cold War rivals, the United States and the Soviet Union, to achieve superior spaceflight capability. 2 words no spaces.
- 8. fought between North Korea and South Korea from 1950 to 1953. The war began on 25 June 1950 when North Korea invaded South Korea. The war ceased with an armistice on 27 July 1953. 2 words no spaces.
- 9. the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for three weeks before its three silver-zinc batteries ran out. 1 word 1 number no spaces.
- 11. an American astronaut. In 1961, he became the second person and the first American to travel into space and, in 1971, he became the fifth and oldest person to walk on the Moon, at age 47. 2 words no spaces.
- 12. a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was a major conflict of the Cold War. 2 words no spaces.
- 14. a Soviet and Russian politician who served as the last leader of the Soviet Union from 1985 to the country's dissolution in 1991. 2 words no spaces.
- 15. a guarded concrete barrier that encircled West Berlin of the Federal Republic of Germany from 1961 to 1989, separating it from East Berlin and the German Democratic Republic. 2 words no space.