Glasgow lads are now absolutely convinced they have spotted a portal in the sky after a "UFO" appeared above the city for the second night in a row.Robert Hampston and his friend Jake Griffiths say a glowing floating object appeared above their heads at a flat in Merchant City on both Tuesday and Wednesday night - at the exact same time.Yesterday we told how a large white glowing circle, with what looks to be a black inner ring, appeared at around 11.30pm on Tuesday - and 24 hours later it was