Hundreds of people gathered at the house of murdered Palestinian youth Mohammed Abu Khudair in east Jerusalem as Friday prayers begin.
The teenager's body is expected to be released soon for burial.
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Half of those killed or maimed in the last 72 hours of intense bombardments in Aleppo have been children.
Astronomers said: "Europa’s ocean is considered to be one of the most promising places that could potentially harbor life".
The rain will ease in the west tonight, but the cloud cover will remain across much of England, Wales and N. Ireland.