New light on the solar system: The origins of water on earthKasting, James F
There's sort of these two alternatives for how you could have had life arise on Earth, and one is that the very basic building blocks, like water, and methane, and CO2 – like, those molecules were definitely brought to Earth by ices in comets, and maybe once they were on Earth, then...
They were the very first life on Earth, 它们是地球上最早的生命, and they gave rise to every one of the billions of species 自此之后,地球上 出现的数十亿种物种 that have inhabited our planet since. 通通都起源于它们。 At the time, Earth was almost completely devoid 在当时,地球上可说是非常...
The primordial ocean was occasionally vaporized by massive meteorite impacts called the "late heavy bombardment" during the first hundreds of million years of the Earth's history (Sleep et al., 1989; Marchi et al., 2014). Liquid water is essential for life, and organic molecules are typically...
If this were true, then the elements needed to form water on Earth would not have been freely available. As a consequence, it was proposed that collisions with icy comets or similar gas-and water-rich materials brought water to Earth after the planet had sufficiently cooled to retain it. ...
away from Earth by the solar wind (a stream of charged particles emitted by the Sun). If this were true, then the elements needed to form water on Earth would not have been freely available. As a consequence, it was proposed that collisions with icy comets or similar gas-and water-rich...
It presents a detailed but non-technical analysis of questions relating to climate change, our dependence on fossil fuels, deforestation, loss of biodiversity, desertification, and air, water, soil, and ocean pollution, as well as problems related to overpopulation, poverty, social and economic ...
Department of Earth and Planetary SciencesBrian BerkowitzDepartment of Earth and Planetary SciencesJohn Wiley & Sons, LtdWater Resources ResearchEdery, Y.; Guadagnini, A.; Scher, H.; Berkowitz, B. Origins of anomalous transport in heterogeneous media: Structural and dynamic controls. Water Resour. ...
Chou C-L (1978) Fractionation of siderophile elements in the earth's upper mantle. In: Proceedings of the 9th lunar and planetary science conference pp. 219–230 Clog M, Cartigny P, Aubaud C (2012) Experimental evidence for interaction of water vapor and platinum crucibles at high temperatur...
Three Key Findings on Lunar Water Origins Three key results are central to the report. An early Earth signature: The oxygen isotopic composition closely matches enstatite chondrites, a meteorite type believed to be the building blocks of the Earth. There are also clear signs of cometary contribu...