from smh.com.au: Fragments from a science satellite are likely to crash to Earth late Sunday or early Monday after the one-tonne probe breaks up at the end of its mission, the European Space Agency (ESA) says. In a statement, the agency said when and where the pieces would land was still unclear. Experts have previously said the statistical risk to humans is remote. Several dozen fragments totaling around 200 kilograms, or about the weight of a car engine, will survive contact with the atmosphere, according to computer models.