astronaut: A person trained to travel into space for research and exploration.
the current: A fluid such as water or air that moves in a discernible direction. (in electricity) the flow of electricity or amount of charge that moves through some substance over a specified period of time.
DNA: (abbreviation for deoxyribonucleic acid) A long, double-stranded, helical molecule that is present in most living cells and carries genetic instructions. It is built on a skeleton of phosphorus, oxygen, and carbon atoms. In all living things, from plants and animals to microorganisms, these instructions tell cells which molecules to make.
soccer field: A field where athletes play American football. Because of its size and familiarity, many people use this field as a measure of how big something is. The regulation field (including end zones) is 360 feet (approximately 110 meters) long and 160 feet (approximately 49 meters) wide.
international space station: An artificial satellite orbiting the earth. Operated by the United States and Russia, the station provides a laboratory where scientists can conduct experiments in biology, physics, and astronomy, and observe the Earth.
microorganisms: Abbreviation for microorganism. Organisms that are too small to be seen with the naked eye and include bacteria, some fungi, and many other organisms such as amoebas. Most are composed of a single cell.
month: Natural satellites of all planets.
orbit: The curved path of a celestial body or spacecraft around a galaxy, star, planet, or moon. A complete revolution around a celestial body.
Pacific: The largest of the world’s five oceans. It separates Asia and Australia to the west and North and South America to the east.
planet: A large celestial body that orbits a star, but unlike a star, it does not produce visible light.
robot: A machine that can sense its environment, process information, and respond with specific actions. Some robots can operate without human input, while others are guided by humans.
solar: It has to do with the sun or the radiation it emits. it comes from solMeans sun in Latin.
Source: www.snexplores.org
