Space

Front 1

Axis

Back 1

An Imaginary line about which a body rotates.

Front 2

Rotation

Back 2

The action of rotating an axis or center.

Front 3

Revolution

Back 3

Motion in orbit or a circular course or around an axis or center.

Front 4

Eclipse

Back 4

An obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.

Front 5

Solstice

Back 5

Either of the two times in the year,the Summer solstice and the Winter solstice,when the sun reaches its highest or lowest point in the sky at noon,marked by the longest and shortest days.

Front 6

Equinox

Back 6

The time or date (twice each year) at which the sun crosses the celestial equator,when day and night are of the equal length (about September 22 and March 20).

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Solar Eclipse

Back 7

An eclipse in which the sun is obscured by the moon.

Front 8

Lunar Eclipse

Back 8

An eclipse in which the moon appears darkened as it passes into the Earths shadow.

Front 9

Maria

Back 9

A large,level basalt plain on the surface of the moon appearing dark by contrast with highlands areas:[in names].

Front 10

Electromagnetic Spectrum

Back 10

The range of wavelengths or frequencies over which electromagnetic radiation extends.

Front 11

Refracting Telescope

Back 11

A telescope that uses a converging lens to collect light.

Front 12

Reflecting Telescope

Back 12

A telescope in which a mirror is used to collect and focus light.

Front 13

Observatory

Back 13

A room or building housing an astronomical telescope or other scientific equipment for the study of nature phenomena.

Front 14

Radio Telescope

Back 14

An instrument used to detect radio emissions from the sky,whether from nature celestial objects or from artificial satellites.

Front 15

Satellite

Back 15

An artificial body placed in orbit around the Earth or the moon or another planet in order to collect information or for communication.

Front 16

Moon Phase

Back 16

Is the appearance of the illuminated portion of the moon as seen by an observer,usually on Earth.

Front 17

New Moon

Back 17

The phase of the moon when it is in conjunction with the sun and invisible from earth,or shortly thereafter when it appears as a slender crescent.

Front 18

Waxing(Moon)

Back 18

Is the appearance of the illuminated portion of the moon as seen by an observer,usually on Earth.

Front 19

Full Moon

Back 19

The phase of the moon in which its whole disk is illuminated.

Front 20

Waning Moon

Back 20

Is the appearance of the illuminated portion of the moon as seen by an observer on Earth.

Front 21

Rocket

Back 21

An elongated rocket-propelled missile or spacecraft that goes up into space.

Front 22

Orbit

Back 22

The curved path of celestial object or spacecraft around a star,planet,or moon,esp.a periodic elliptical revolution.

Front 23

Space Probe

Back 23

a projecting device for engaging in a drogue,either on an aircraft for use in in flight refueling or on a spacecraft for use in docking with another craft.

Front 24

Project Mercury

Back 24

Was the first human spaceflight program of the United States.It ran fro 1959 through 1963 with the goal of putting a human in orbit around the Earth.

Front 25

Project Gemini

Back 25

Was the second human spaceflight program of NASA,the civilian space agency of the United States government.

Front 26

Project Apollo

Back 26

Was the United States spaceflight effort which landed the first humans on Earth's moon.

Front 27

Space Shuttle

Back 27

Is a reusable launch system and orbital spacecraft operated by the U.S National Aeronautics and Space Administration (NASA) for human spaceflight missions.

Front 28

Space Station

Back 28

Is a manned satellite designed to remain in low Earth orbit for a long period of time,and which has the ability for other spacecraft to dock to it.

Front 29

Solar System

Back 29

Consists of the Sun and astronomical objects bound to it by gravity ,all of which formed form the collapse of a giant molecular cloud approximately 4.6 billion years ago.

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Mercury

Back 30

Is the innermost and the smallest planet in the Solar System , orbiting the Sun once every 87.969 Earth days.

Front 31

Venus

Back 31

is the second planet from the Sun,orbiting it every 224.7 Earth days.

Front 32

Earth

Back 32

Is the third planet from the Sun and the densest and fifth-largest of the eight planets in the Solar System.

Front 33

Mars

Back 33

Is the fourth planet from the Sun in the Solar System.The planet is named after the Roman god of war,Mars.

Front 34

Jupiter

Back 34

Is the fifth planet from the Sun and the largest planet within the Solar System.It is a Gas giant.

Front 35

Saturn

Back 35

Is the sixth planet from the Sun and the second largest planet in the Solar System,after Jupiter.

Front 36

Neptune

Back 36

Is the eighth planet and the farthest planet from the Sun in our Solar System.

Front 37

Pluto

Back 37

Is the second most massive known dwarf planet in the Solar System and the tenth most massive body observed directly orbiting the Sun.

Front 38

Comet

Back 38

Is an icy small Solar System body that,when close enough to the Sun,displays a visible coma and sometimes also a tail.

Front 39

Meteor

Back 39

Is a rock that breaks off of another rock in space and then falls on to Earth's surface.

Front 40

Meteorite

Back 40

Is a natural object originating in outer space that survives impact with the Earth's surface.

Front 41

Asteroid

Back 41

A small rock body orbiting the sun.