A 'potentially hazardous' asteroid the size of a blue whale, the largest animal on the planet, will zip past Earth tomorrow, says.The asteroid, called 2015 FF, is expected to come within 0.02864 astronomical units, or around 2.6 million miles, from the Earth's surface, at 08:09 UTC (09:09 BST). 2015 FF has a diameter anywhere between 42 and 92 feet (13 to 28 metres) – meaning it could be the average size of a blue whale (90 feet) or almost three times as long as a bus.
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