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smithsonianmag.com > smart-news > an-amateur-astronomer-using-google-maps-spotted-a-strange-indentation-it-turned-out-to-be-a-meteorite-crater-from-390-million-years-ago-180989158

An Amateur Astronomer Using Google Maps Spotted a Strange Indentation. It Turned Out to Be a Meteorite Crater From 390 Million Years Ago

1+ mon, 3+ week ago   (545+ words) Margherita Bassi | Daily Correspondent Amateur astronomer Joël Lapointe was perusing Google Maps, plotting hiking routes for a camping trip, when he noticed something strange on the terrain. It looked to be a large indentation spanning 15.5 miles across and forming a…...

Smithsonian Magazine
smithsonianmag.com > smart-news > scientists-double-down-on-age-of-earths-oldest-meteorite-impact-crater-dating-it-again-at-more-than-three-billion-years-old-180989023

Scientists Double Down on Age of What Might Be Earth's Oldest Impact Crater, Dating It, Again, at More Than Three Billion Years Old

2+ mon, 1+ week ago   (630+ words) Sara Hashemi | Daily Correspondent After more than a year of controversy, scientists say they’ve used two geologic “clocks” to reconfirm that a site scarred by an ancient meteorite in Western Australia is more than three billion years old. They once…...

Smithsonian Magazine
smithsonianmag.com > smart-news > when-did-the-earths-crust-start-to-shift-scientists-uncover-evidence-of-plate-tectonics-happening-3-48-billion-years-ago-180988399

When Did the Earth's Crust Start to Shift? Scientists Uncover Evidence of Plate Tectonics Happening 3.48 Billion Years Ago

5+ mon, 1+ week ago   (411+ words) More from Smithsonian magazine Sara Hashemi - Daily Correspondent The Earth’s crust is constantly changing. It’s currently made of many huge rock slabs called tectonic plates—seven major ones along with many more smaller plates—that fit together like puzzle pieces…...