Bitesize gcse science physics space astronomer at the royal observatory greenwich tom kerss on satellites a satellite is any object that orbits around what we would call a superior body that just means another object which is bigger or heavier than the satellite itself.
What are satellites used for bbc bitesize.
So we place satellites in orbit around the earth what we do is we.
Bitesize space science spectroscopy and the composition of stars jon chase describes how different elements absorb and emit light of specific wavelengths or colours.
The curved reflectors of satellite dishes allow signals to be sent and received over large distances.
He explains how this can be used to identify which elements are present in distant stars by analyzing the spectrum of radiation coming from these stars.
Satellites record history of antarctic melting.
Satellite will be tuned to australian vegetation when you made a mobile phone call a satellite may well have been used to route your call.