Metal satellite — one with edges of Uranium (8)
I believe the answer is:
titanium
'metal' is the definition.
(I know that titanium is a type of metal)
'satellite one with edges of uranium' is the wordplay.
'satellite' becomes 'titan' (I've seen this before).
'one' becomes 'i' (Roman numeral).
'with' is a charade indicator (letters next to each other).
'edges of' suggests removing the centre.
'uranium' with its centre taken out is 'um'.
'titan'+'i'+'um'='TITANIUM'
(Other definitions for titanium that I've seen before include "Metallic element used in aircraft components" , "Hard metal" , "Atomic no. 22" , "Metal used in strong lightweight alloys" , "Metal used in the manufacture of light alloys for aircraft parts" .)