The Vredefort impact in South Africa, caused by a massive 25 km-wide asteroid, is the largest known impact structure on Earth, originally spanning 280 km. This event occurred about 2 billion years ago, long before the dinosaurs, and left a crater much larger than the one from the asteroid that killed the non-avian dinosaurs.
Related Posts
More than half of life on Earth is found in soil – here’s why that’s important
Springtails (Fasciosminthurus quinquefasciatus) are found in any damp soil. Andy Murray/chaosofdelight.org, CC BY-NC-ND John Quinton, Lancaster University A…
Was Earth already heating up, or did global warming reverse a long-term cooling trend?
Natural records suggest a cooling trend was underway thousands of years ago. DeAgostini/Getty Images Ellie Broadman, University of…
Improving upon the sun: LED lights fuel plant growth in space
Light-emitting diodes (LEDs) used in medical devices and for growing plants, like potatoes seen here, are used by…
Navigating the April 8th North American Solar Eclipse
Learn about practical recommendations for eclipse viewing, including the use of pinhole projection, monitoring temperature changes, observing animal…