A one-ton satellite is expected to crash down to earth this weekend - but scientists don't know where.
The European Space Agency says the craft, which has been in low-Earth orbit since 2009, has run out of fuel, ending its mission.
It is expected to disintegrate on re-entry, with most of the fragments burning up in the atmosphere.
But around 20% of the satellite's mass - about 200kg - is expected to crash to earth in various fragments and it's impossible to predict where they will land.
http://www.mirror.co.uk/news/technology-science/science/one-ton-satellite-crash-earth---2712239#ixzz2k9vDGeIe
