“Deep Freeze” –Extraterrestrial Dust Cloaked Earth from Crack-Up of 93-Mile-Wide Asteroid

 

 

Ice Age

 

“Normally, Earth gains about 40,000 tons of extraterrestrial material every year,” says Philipp Heck, a curator at the Field Museum and associate professor at the University of Chicago, about Earth’s deep freeze 466 million years ago, long before the age of the dinosaurs, from dust created by a colossal asteroid collision. “Imagine multiplying that by a factor of a thousand or ten thousand. To contextualize that, in a typical year, one thousand semi trucks’ worth of interplanetary dust fall to Earth. In the couple million years following the collision, it’d be more like ten million semis.”

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“The Lost Story” –Continent-Sized ‘Fossils’ of Ancient Earth

Earth from Moon Apollo 12

 

Scientists long theorized that separated continents deep in Earth’s mantle came from subducted oceanic plates. But the new study indicates these distinct regions may have been formed from an ancient magma ocean that solidified during the beginning of Earth’s formation and may have survived the massive Moon-creating impact. These ancient, distinct, continent-sized regions of rocks, isolated since before the collision that created the Moon 4.5 billion years ago, exist hundreds of miles below the Earth’s crust, offering a window into the building blocks of our planet.

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Planet Earth Report –“Alien Telescopes Observing Earth to Creating Human Consciousness”

Earth from the ISS

 

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

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Last Week’s Top 5 Space & Science Headlines –“Strange Dark-Energy Objects to Unknown Physics”

Dark Energy Survey

 

 

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“Unrecognizable” –Andes Icons Mount Chimborazo & Quelccaya Ice Cap

Quelccaya_Glacier

 

Climate change is wrecking havoc with two of our planet’s icons: Ecuador’s glacier-studded Mount Chimborazo -the highest spot on our planet- and Peru’s Quelccaya, which until recently was the world’s largest tropical ice cap.

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Planet Earth Report –“Extreme ‘Underground Galapagos’ to Battle of Hong Kong Apps”

 

Earth from the ISS

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

(more…)

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