英语翻译The absence of atmosphere in space will allow the space telescope to show scientists lights sources as for as 14-billion light years aways some sevem times farther out than those visible to the biggst ground -based optical telescope(注
Despite being Earth’s closest neighbor, exploration of Venus by spacecraft has been neglected relative to Mars; we need more data at every level, from its interior structure to its composition, from its surface to its upper atmosphere. A host of mechanisms have contributed to shape Venus over...
the structure and dynamics of its tenuous exosphere and the interaction of the Moon’s surface and exosphere with the different sources of plasma and radiation of its environment, including the solar wind and the escaping Earth’s upper atmosphere. Missions...
Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal. At concentrations
There is almost no oxygen on Mars and this makes it impossible for us 4. _to__e_x_is_t (exist). If we are to go to Mars one day, we should have to take along our own oxygen, food, clothing and shelter. 提能二 话题写作(用本单元词汇、句式和语法知识写满分作文) 假如...
(lower mantle), also called the convective boundary layer. In a steady state scenario and in the absence of heat-producing elements, heat flow is supposed to be constant in the conductive crust, suggesting a relatively constant temperature gradient for constant thermal conductivity. The calculated ...
an ancient ocean.Their absence supports the picture of a cold, dry Mars that never experienced the extended mild period required to form lakes and oceans.However, more recent data imply that at least some parts of the planet did in fact experience long periods in the past during which liquid...
Furthermore, Mars Global Surveyor data released in 2003 seem to indicate that the Martian surface contains too few carbonate rock layers—layers containing compounds of carbon and oxygen—that should have been formed in abundance in an ancient ocean. Their absence supports the picture of a cold, ...
On Earth, most of the UVB (280–315 nm) and UVC (200–280 nm) radiation is absorbed by the ozone (O3); conversely, this molecule is present in low concentrations in the current Martian atmosphere [10]. The actual UV flux reaching the surface of Mars is influenced by various factors, ...
Once back in the water cycle, the effluent creates the standard impact on the eco-system or is reused for an assortment of objectives, known as “water reclamation”. The treatment process performed in a wastewater treatment plant depends upon the types of wastewater, such as domestic or ...