The European space probe Euclid, which is designed to research dark matter and dark energy, has had its view of the universe restored after scientists devised a way of clearing ice off one of its mirrors. Problems caused by wafer-thin layers of ice on the telescope’s optics were solved by a newly developed method, the European Space Agency (ESA) announced in Paris on Tuesday. The de-icing process involved warming the telescope’s mirrors individually using internal heaters. Just heating the coldest mirror behind the optics by 34 degrees Celsius – from minus 147 to minus 113 degrees – enabled th…