It’s not completely rare to see or hear double rainbows, but what about a dual meteor strike? It’s an uncommon occurrence, but scientists in Sweden lately found confirmation that two meteors smacked into Earth simultaneously, almost 458 million years ago. Scientists from the University of Gothenburg discovered two craters in the region of According to Erik Sturkell, a university teacher of geophysics at the University of Gothenburg Jämtland in central Sweden, the meteors that made the craters landed just a few miles from each other at the same instant. Erik Sturkell is also one of the researchers who is studying the newfound craters. When the meteors crashed into Earth, Jämtland was only a seafloor, nearly 1,600 feet (500 meters) below the surface of the water. One of the craters created by the meteors is gigantic, measuring 4.7 miles (7.5 kilometers) across. The other, quite smaller crater — which is nearly 2,300 feet (700 m) across — is situated just 10 miles (16 km) from its larger neighbor.
Image Credit: An artist's depiction of the dual meteor strike. Don dixon/erik sturkell/university of gothenburg
After examining info collected from a drilling operation, the scientists resolute that the impact craters were made at the same time. The evidence revealed matching geological arrangements, or layers of rock, inside each crater. The remains that accumulated inside the craters over the following millennia also dates back to the identical time, according to Sturkell. Sturkell said in a statement “In other words, these are simultaneous impacts,” When the meteors crashed into Earth, they moved the water underneath them, leaving two gigantic, dry pits in the seabed for nearly 100 seconds, the scientists said.
Sturkell said “The water then rushed back in, bringing with it fragments from the meteorites mixed with material that had been ejected during the explosion and with the gigantic wave that tore away parts of the seabed,”
Around 90 meteorites in total have been found on Kinnekulle in the just previous 15 years alone. But in Jämtland, where the double meteor strikes happened, scientists have only found minor grains of chromite, a leftover of big, exploded meteors.