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13 Οκτ 2021 · Earth has had oceans for nearly four billion years 1 and Mars had lakes and rivers 3.5–3.8 billion years ago 2. However, it is still unknown whether water has ever condensed on the...
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30 Απρ 2021 · According to a new, Harvard-led study, geochemical calculations about the interior of the planet’s water storage capacity suggests Earth’s primordial ocean 3 to 4 billion years ago may have been one to two times larger than it is today, and possibly covered the planet’s entire surface.
The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era, after a geological crust started to solidify following the earlier molten Hadean Eon.
15 Νοε 2013 · Mars may be a desolate world today, but billions of years ago, the Red Planet was a warm, wet paradise of blue skies and lakes — a hospitable realm re-created in a stunning new video...
Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System. Initially, Earth was molten due to extreme volcanism and frequent collisions with other bodies.
19 Οκτ 2023 · Billions of years ago, Earth, along with the rest of our solar system, was entirely unrecognizable, existing only as an enormous cloud of dust and gas.
16 Μαρ 2017 · Eruptions as big as the biggest previously known ones happened at least 10 times in the past 3 billion years, an analysis of the geological record shows.
