En appliquant quelques principes de base, chaque jardinier peut augmenter la fertilité de son sol tout en luttant efficacement contre l’effet de serre. Explications. On savait déjà que les.
Is an intact piece of protoplanet Theia locked away inside the Moon?
Scott Sutherland
mercredi, 11 mars 2020 à 11:30 - New research may solve a persistent mystery about how Earth s Moon formed.
New clues to the origin of the Moon surfaced this week, which reveal that the Earth and Moon are not as similar as previously thought, and part of the protoplanet that helped create the Moon may still be preserved deep under the lunar surface.
The current theory of how Earth and Moon came to be, as we know them today, is called the Giant-Impact Hypothesis. Essentially, billions of years ago, proto-Earth was all alone as it circled the Sun, until a fateful collision with a Mars-sized protoplanet scientists named Theia. The cataclysmic impact blasted both planets apart, and while much of Theia mixed together with proto-Earth, a cloud of debris that was blasted out into space eventually coalesced and cooled to form the Moon.
Stunning but deadly, see the place on Earth where nothing survives
Caroline Floyd
vendredi, 4 décembre 2020 à 11:30 - Scientists believe understanding the conditions on this part of Earth may help us understand habitats on other planets.
Life on Earth shows up in some surprising places. No matter how extreme the environment, some intrepid lifeform often a microorganism makes a home there. Species that live near hydrothermal vents in the ocean are an excellent example of these so-called extremophiles, who thrive in under the pressure of 2500 metres of water overhead, in temperatures up to 80ºC.
But even they don t care for the visually stunning but intensely hostile environment of Dallol.