A Russian Proton rocket has failed to place a US telecommunications satellite in the correct orbit.
The AMC-14 spacecraft, owned by SES Americom, was supposed to have been put 36,000km above the Earth but only got to 28,000km, launch officials say.
It is understood the Proton's Breeze-M upper-stage failed to operate properly.
More: http://news.bbc.co.uk/2/hi/science/nature/7299328.stm