What is special about Envisat? It is as big as a bus, and very heavy. It travels 800 kilometres above the Earth, and it goes round the Earth once every 100 minutes. Envisat gets power from the light of the sun, and it uses that power to send information back to scientists on Earth. The information is about many different things, for example:
- changes in the ice in the Arctic and Antarctic
- the beginnings of floods and storms - - fires in forests
- early news of earthquakes
- information about the sea how much foad there is for fish, and where some water plants are a danger ta life in the sea