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Space terms - SMS

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
gravity   a force that causes objects to be drawn to each other  
moon   a natural satellite that revolves around a planet  
quasar   very old, starlike object with a huge amount of energy in the form of light or radio waves  
blackhole   created by a large star collapsing  
planet   an object in definite orbit around the sun, which usually has an atmosphere  
ozone   form of oxygen with a pale blue color and sharp odor  
atmosphere   mass of gasses that surround the earth or other heavenly body  
comet   clestial object compsoed of ice and rocks that orbits the sun (dirty snowball)  
galaxy   one of millions of star systems that contain stars, planets, gasses, etc...  
gamma   electro-magnetic radiation with wavelength of 10 cm or less  
constellation   a recognizable pattern that is easily recognized  
astronaut   a person who travels in space  
meteor   small chunks of stony or metallic matter that enter the earth's atmosphere and usually brun up  
astronomer   person who studies the stars, planets, and how they move in space  
light year   unit of distance used for space travel calculations  
solar winds   stream of ionized gas particles constantly emitted from the sun in all directions  
universe   all that exists - planets, stars, galaxies  
ultra-violet   electo-magnetic waves with wavelengths from c.5 to c.400 nanometers  
sunspots   visible places on the sun up to 1000s of miles wide  
asteroids   planetoids that move around a background of stars (no atmosphere, made of rock)  
satellite   small body that revolves around another  
milky way   our home galaxy  
orbit   the curved path used by a satellite, planet, comet, etc...  
star   large luminous body in space made of hot glowing gases such as the sun (it makes its own light by nuclear fusion)  
nebula   area of gus or dust usually formed by an exploding star or supernova  


   






 
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