| A | B |
| million | 1,000 x 1,000 |
| planet | A heavenly body that moves around the sun in an orbit |
| orbit | The curved path a planet travels through space |
| asteroid | a small, minor planet that revolves around the sun |
| comet | a bright starlike object that revolves around the sun with a tail of light |
| explosion | blowing up |
| solar system | the sun and all the planets, comets and asteroids that revolve around it |
| eclipse | a complete or partial blocking of lightfrom one oblect to another |
| surface | the outside covering of an object |
| giant | extremely big, huge |
| magnetic | able to attract metals |
| shimmer | to shine with flickering light |
| intense | very great or strong, extreme |
| star | a heavenly body appearing as a bright point in the sky |
| telescope | an instrument used for making distant objects appear near |
| sun | the brightest star in the sky, the object that the earth and other planets revolve around |
| revolve | to move in a circle around a point |
| thousand | 10 x 100 |
| moon | the planet the revolves around the earth |
| energy | force, the power to work |