Wei Y, Fraenz M, Dubinin E et al (2012) Enhanced atmospheric oxygen outflow on Earth and Mars driven by a corotating interaction region. J Geophys Res 117:A03208Enhanced atmosphericoxygen outflow on Earth and Mars driven by a corotatinginteraction region. Wei Y,Fraenz M,D...
The atmosphere of Mars contains about 0.15% oxygen. The element and its compounds make up 49.2%, by weight, of the Earth’s crust. About two thirds of the human body and nine tenths of water is oxygen. In the laboratory it can be prepared by the electrolysis of water or by heating ...
The three-phase interfacial phenomena that determine the behavior of oxygen bubbles as they form at the electrode surface during electrolysis of water are strongly dependent on gravity9. The average gravitational acceleration on Earth is 9.807 m/s2or 1 g; gravity on Mars and the Moon is a...
Have you ever watched a piece of paper burn and asked yourself, “Would this be possible if there was no oxygen in Earth’s atmosphere?’ Or perhaps you’ve mused, “How do humans plan to live on Mars, as it won’t be possible to build a fire in the oxygen-depleted atmosphere of ...
Is there life on Mars(火星)? We do not know. But we are sure that earth people do not live on Mars. Earth people need oxygen to breathe. There is almost no oxygen on Mars. It is uncertain exactly how life arose on Earth, so it is difficult to determine how common such mechanisms ...
During the early evolution of the atmosphere on Earth, water must have been able to exist as a liquid, since the oceans have been present for at least three billion years. Given that solar output four billion years ago was only about 60 percent of what it is today,enhancedlevels of carbon...
On Earth, direct uptake of O atoms has been observed near noctilucent clouds in the mesosphere31,32. Indeed, our observations show that H2O ice clouds rapidly formed at 60–80 km (Fig. 2k), and they may exist even above 100 km10. If the H2O ice clouds formed near 130 km ...
根据文章第二段Earth is the only known planet that stays in a perfect position from our Sun to support water in a liquid state.Astronomers call this perfect distance from a star the "habitable (宜居的)" or "Goldilocks zone".(地球是已知的唯一一颗距离太阳很近的行星,它...
The new models show that maximumTpestimates on the oldest samples from Earth, Mars, Moon, and Vesta, decrease as planet size decreases. This may be expected sinceTpshould scale with accretion energy and reflect the Clausius-Clapeyron slope for the melting of silicates and Fe-Ni alloys. This ...
Do you know Mars? We are always___, “Is there life on Mars?” We all know that it is difficult for people on the Earth to live on Mars because we need water and oxygen to ___, but there is little oxygen on Mars. Living on Mars seems like...