▲ Peaking
Science
A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli
A Quebec amateur astronomer used satellite imagery to spot a 25-kilometre ring, leading geologists to confirm an impact structure.