a person who travels beyond the earth's atmosphere
an expert in the study of the Sun, Moon, stars, planets, and other space bodies
all the gases which surround a star, like our Sun, or a planet, like our Earth
a hole caused by an object hitting the surface of a planet or moon or a depression around the opening of a volcano
the remains of anything broken down or destroyed
the distance through a circle or sphere from one side to the other
the hiding or dimming of one celestial object by another object
what the moon is called when the majority of the nearside is illuminated and only a diminishing crescent remains in darkness, culminating in the "full moon" when the Moon and the Sun are on opposite sides of the Earth.
a mutual physical force attracting two bodies, influenced by the mass of the two objects and the distance between the two objects.
of, involving, caused by or affecting the moon; from the Latin word "luna", which means moon.
occurs when the Earth passes between the Moon and the Sun
the section of the Apollo spacecraft designed to land on the Moon
the measure of the amount of matter in an object
A shooting star or actually space debris that enters and burns up in earth's atmosphere
a small natural body which orbits a larger one. A natural satellite.
the moon coming up over the horizon
the National Aeronautics and Space Administration which is in charge of all space programs for the United States
the phase of the Moon when the Moon is lined up between the Earth and the Sun. We see the side of the Moon that is not being lit by the Sun.
the path followed by an object in space as it goes around another object; to travel around another object in a single path
the particular appearance of a body's state of illumination, such as the new, full or crescent phases of the Moon
Something impressive or extraordinary
to move in an orbit or circle around something
to turn around a center point, or axis, like a wheel turns on a bicycle
a smaller body which revolves around a larger body; a natural or an artificial moon. Earth-orbiting spacecraft are called satellites
a shadow which falls on an area of Earth when the Moon moves between the Sun and Earth
a device which makes a larger image of a faraway object
the huge space which contains all matter and energy