Could the oldest rocks under our feet be the remains of a planet that is now extinct? This is the kind of question that ...

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Earth formed about 4.6 billion years ago, during the geological eon known as the Hadean. The name “Hadean” comes from the Greek god of the underworld, reflecting the extreme heat that likely ...

Earth's deep mantle stored enough water in rocks to equal one ocean during our planet's early molten days, helping explain ...

In a recent study published in Earth and Planetary Science Letters, researchers suggest that Earth once had a giant, ...

In February 1971, Apollo 14 astronauts bagged a moon rock later found to contain a shard blasted from the early Earth. A technician at the Lunar Receiving Laboratory in Houston examines "Big Bertha," ...

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In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically through the system, smashing into each other in collisional cascades. Over time ...

For decades, helium has been produced with natural gas, generating huge carbon emissions. Now, geologists are looking for new helium sources — and finding enormous "carbon-free" reservoirs that could ...

In findings published in science journal Earth and Planetary Science Letters, a sample collected during the 1971 Apollo 14 lunar mission was found to contain traces of minerals with a chemical ...