太陽系探査の年表の英語

an instrument used for astronomical observation, called heliometer

Mars space probe

a lunar probe

a spaceship to survey the moon, called Surveyor

a moon probe of the Soviet Union,called Luna

a probe used to observe Mars

a spacecraft used to explore the moon, called mooncraft

a planetary probe

the act of probing a planet

a telescope that is used to follow the path of a comet

a planisphere used for space flying

the nebular hypothesis of the origin of the solar system

a propitious alignment of planets for space exploration

a telescope used to observe the celestial bodies

the Soviet Union's project of investigating Phobos, the larger of the two satellites of Mars

the solar calendar on which one year is equal to the time that the earth takes to go once around the sun

a telescope devised so as to be able to follow the movements of heavenly bodies, called equatorial mounted

an unmanned satellite to Mars

an astronomical telescope

the American project to probe Jupiter called Galileo Project

an American unmanned spacecraft to survey the moon, named Surveyor

a synodic period between the sun and a certain planet

New Stage of Mars Exploration Begins

a telescope for astronomical observation called a Schmidt telescope

Mars Probe Investigates Large Meteorite

relative to the earth, a portion of universal space called deep space

an artificial satellite used for weather observation

aerospace research

send a space probe to Mars

an exploratory walk by an astronaut on the surface of the moon