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However, Mars did power an early dynamo that produced a strong magnetic field 4 billion years ago, comparable to Earth's present surface field. After the early dynamo ceased, a weak late dynamo was reactivated (or persisted up to) ~3.8 billion years ago.
12 paź 2023 · Research led by the University of Tokyo and published in 2022 in Nature Communications offers one reason why: Billions of years ago, Mars lost its magnetic field. Without the protection that a magnetic field offered, the atmosphere was stripped, and eventually, the oceans evaporated as water vapor in the atmosphere was lost to space.
11 lip 2023 · Researchers in the paleomagnetics lab of Professor Roger Fu, John L. Loeb Associate Professor of the Natural Sciences, have uncovered evidence that Mars had a global magnetic field, much like Earth’s, for hundreds of millions of years longer than was once believed.
4 dni temu · The “when” question in particular has driven researchers in Harvard’s Paleomagnetics Lab in the Department of Earth and Planetary Sciences. A new paper in Nature Communications makes their most compelling case to date that Mars’ life-enabling magnetic field could have survived until about 3.9 billion years ago, compared with previous ...
25 wrz 2023 · Research led by the University of Tokyo and published in 2022 in Nature Communications offers one reason why: Billions of years ago, Mars lost its magnetic field. Without the protection that...
11 lut 2022 · The loss of its magnetosphere was catastrophic for Mars. How did it happen? A new study published in Nature Communications tries to answer that question, like many studies before. The title is...
20 gru 2022 · As the martian interior cooled, leading theories hold, its magnetic field died out, leaving the atmosphere undefended and ending this warm and wet period, when the planet might have hosted life. But researchers can’t agree on when that happened.
