After its latest visit to Earth, 'Halley's comet is already on course, 'back towards the icy wastes of outer space. 'In an attempt to…' PROF. SIMON SCHAFFER:'The last time it visited in 1986 ...

9, 1986, when it arrived at perihelion — the ... that will come to an end. For at that moment, Halley's Comet will arrive at aphelion; the far end of its orbit — that location in space that ...

Last seen in 1986 and not due in the solar system until 2061, Halley’s comet will nevertheless make an impact this week when bits of it left in the solar system from previous visits come ...