A football-field-size asteroid hit the North Sea and sent a 330-foot tsunami racing across Europe The Times of IndiaAsteroid hit North Sea: Has the 20-year mystery of Silverpit Crater in ‘world’s most dangerous sea’ finall The Economic TimesAsteroid once struck 80 miles off coast of Yorkshire causing 330ft tsunami Metro.co.ukNorth Sea crater was created by an asteroid smashing into Earth, causing a tsunami taller than Big Ben BBC Sky at Night MagazineRare marine asteroid impact crater confirmed beneath the North Sea after decades-long debate The Watchers – Watching the world evolve and transform