In this activity children take on the role of Earth observation scientists submitting a request for an image they would like for their research. This gives them the opportunity to consider the possibilities of pictures taken from orbit (and the limitations) and to write scientifically for a specific audience. It...

Man-made satellites are put in specific orbits around our Earth and other planets to do certain jobs e.g. to send digital communications or to monitor the weather. These orbits can be distinguished by height above the planet and the orbital period. The orbits of natural satellites are much more varied and these...