Filling Earth's Oceans with Water
Scientists have suspected much of Earth's water came from space early in our planetary history. Their prime suspect? A rain of comets, asteroids and carbon-rich meteorites called carbonaceous chondrites. Now, per a report in the journal Science Advances, the so-called Winchcombe meteorite provides clear and convincing support for this theory.
この記事は Rock&Gem Magazine の April 2023 版に掲載されています。
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この記事は Rock&Gem Magazine の April 2023 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,500 以上の雑誌や新聞にアクセスしてください。
すでに購読者です? サインイン
Earth's Oldest Impact Crater Yet
Scientists estimate the age of Earth at 4.543 billion years.
To Create New Species, Raise High the Mountains
It seems like plain old common sense. Increase the complexity and diversity of topography and you'll increase biodiversity. But now we have strong data to support that hypothesis.
A Moon as Old as Earth? Almost!
Earth is estimated to be 4.543 billion years old, and it's believed our Moon was born from a violent collision between the newly formed Earth and another young Mars-sized protoplanet dubbed Theia not long thereafter. But how long was \"not long?\"
ROCK & GEM FIELD GUIDES
Emerald is the green variety of beryl, colored by trace amounts of chromium and sometimes also vanadium.
POLISH FLINT
Flint has often been used throughout history and is thought to be as old as 160 million years.
Pterosaurs Are Flying High!
Pterosaurs were remarkable flying reptiles soaring the skies above dinosaurs.
SUNSET PEAR
By day, Julia DeLo works as an engineer in the aerospace industry and by night, she pursues her passion for cutting gemstones, applying her analytical and mechanical skills to optimize and simplify designs.
The More Things Change, the More They Stay the Same
Eucalyptus trees have been bugged for 52 million years!
Not All Gold Is Created EQUAL
Understanding the Differences Between Colors & Alloys
HARDROCK GAMES
The Enduring Appeal of Mine-Drilling Contests
