Astronaut: person who can pilot a spacecraft.
Depression: drastic decline in national economy with
symptoms like high unemployment, falling prices and decreased
Satellite: manmade object intended to orbit the earth or
other celestial body.
Tornado: violent funnel-shaped thunderstorm with rotating
high-speed air, reaching speeds of hundreds of miles per hour.
Weather: description and measurement of atmospheric
conditions—temperature, air pressure, humidity, wind speeds, etc.