A satellite is an object in space that orbits or circles around a bigger object. There are two kinds of satellites: natural (such as the moon orbiting the Earth) or artificial (such as the International Space Station orbiting the Earth).
Natural chemical 'beats morphine'. The natural chemical was able to relieve pain like morphine. The human body produces a natural painkiller several times more potent than morphine, research suggests. When given to rats, the chemical, called opiorphin, was able to curb pain at much lower concentration than the powerful painkiller morphine. The French team said their findings could be lead to new pain treatments.
They wondered whether humans might produce something similar â and by analysing saliva samples, hit upon opiorphin. This is the first natural substance to be found in humans that exploits this mechanism to relieve pain. But it's unlikely that opiorphin ordinarily has a painkilling role in the body, says Alistair Corbett, a specialist on opioids at Glasgow Caledonian University, UK.