And, until now, it had been assumed that the asteroid acted alone. This week, scientists at Scotland’s Heriot-Watt University ...

The impactor—most likely an asteroid—formed what is today the biggest crater on the planet. Scientists have widely accepted, based on previous research, that the impact structure, known as the ...

much of the crater is buried offshore, under 600m of sediments On land, it is covered by limestone, but its rim is traced by an arc of sinkholes Max Alexander/B612/Asteroid Day Mexico's famous ...