Storyline · Information societyAmateur astronomer discovers 390-million-year-old impact crater in Canada1 event · 1 source · 1/7 blocs · latest event 2d agoFollow the storyline “Amateur astronomer discovers 390-million-year-old impact crater in Canada”Chronology22 Sept23:311 source · 2dAmateur astronomer discovers 390-million-year-old impact crater in Canada1 of 1 events