History of Space Travel


Terms in this set (...)

artificial satellite
man-made equipment that orbits around the earth or the moon
natural satellite
objects that orbit the earth that are not man made - the moon is an example
elliptical orbit
the shape of earth's orbit; flattened oval
the movement of an object around another object
the act of rotating as if on an axis
heliocentric system
a description of the solar system in which all of the planets revolve around the sun; Copernicus believed in this
Hubble Space Telescope
a space telescope and camera named for a famous astronaut (Edward Hubble) used to study space elements
International Space Station (ISS)
a cooperative project between 16 countries where astronauts can live and work in space
Project Mercury
first U.S. space program that orbited a piloted spacecraft around Earth and brought it back safely
Project Gemini
early U.S. space program where one Gemini astronaut team connected with another spacecraft in orbit; also studied the effects of space travel on the human body
Project Apollo
final stage in the U.S. program to reach the Moon, in which Neil Armstrong was the first human to step onto the Moon's surface
a jet engine containing its own propellant and driven by reaction propulsion
space probe
an unmanned vehicle that carries scientific equipment to space to collect information/data
Space Shuttle
a reusable spacecraft with wings for a controlled descent through the Earth's atmosphere
Sputnik 1
the first artificial satellite, was launched by the Soviet Union in 1957