It may have oceans of scientists recently discovered that there is a natural satellite of salt content

Europa Europa with a "could have huge underground ocean" and famous. In the past, scientists believe is the main component of marine sulfate. However, the latest analysis of the Hubble Space Telescope show that the composition of seawater Europa may contain sodium chloride, ie salt. In other words, if you have the opportunity to breathe groundwater Europa, it tastes like the sea, like the Earth.

Europa is one of Jupiter's natural satellites. It is smaller than the Moon, it is mainly composed of silicate rocks. It rarely fluctuate a few hundred meters of the surface, and there are not many craters. Therefore, Europa in the solar system. The most object smooth, high albedo. In addition, only a low surface temperature Europa equatorial region 163 ° C, a lower pole, only minus 223 ° C, thus covering annual surface Europa 10-30 km thick hard ice, but the ice shell 160 may have the following depth. Kilometers of global subsurface ocean (tidal forces provided by the internal heat to keep water liquid).

In the past, NASA Galileo probe carried by near-infrared spectrometer data showed that the surface component contains magnesium Europa. The scientists concluded that the underground oceans over magnesium component may also dominated, but by a planetary scientist at the California Institute of Technology Samantha Trumbo leadership. The team used Hubble Space Telescope imaging spectrometer (STIS) observation, the surface of Europa found to contain sodium chloride.

The group used during 2017 to August 4 STIS observations were discovered spectrum 450 nm (nm) at a characteristic absorption, which indicates that sodium chloride, i.e. water present in the earth in a reflective material. The main component of salt, its existence has a unique salty seawater bitter; the main component at the same time, we eat sodium chloride is salt.

Although fun88 researchers can not guarantee sodium chloride must come from an underground ocean, but that does not mean that the ocean is the main component of chloride ions. In fact, I can only say that sodium chloride is evidence of different substances in the ice shell, but it is still possible to reverse the past. 20 years under the impression that an underground ocean is more like Europa mixed with sea water and salt, will increase the possibility of extraterrestrial life, growth and development.

NASA's Europa Multiple-Flyby Mission probe into space in 2020 is expected to enter orbit Jupiter 45 times and flew over Europa, during which the detector will be looking for any substances that may spill salt. Organic substances on the surface. If given the opportunity, you can try to send a lander and onto the surface of Europa's ice to taste.

Reproduced in: https: //juejin.im/post/5d034bd8f265da1b83338a0a