Astronomers trace the evolution of water loss on Mars

Traces of ancient valleys and river channels suggest that liquid water once flowed over the surface of Mars.

Today she is mostly locked in ice capsplanet or buried underground. However, the results of the latest study showed that some of it evaporates in the form of hydrogen leakage from the atmosphere, according to a new study published in the journal Science Advances in collaboration with two scientists from the Open University of Great Britain.

They found steam by analyzing the light,passing through the Martian atmosphere using the NOMAD (Nadir and Occultation for Mars Discovery) instrument. This is a scientific instrument of the TGO orbital module of the international mission ExoMars 2016. Scientific organizations from Spain, Italy, USA, Canada and Great Britain took part in the development and manufacture of the instrument. The device travels aboard the ExoMars Trace Gas Orbiter, a joint mission of the European Space Agency and Roscosmos.

Measuring water isotopes is an important elementunderstanding how Mars lost water over time and therefore how the planet's habitability has changed throughout its history. The ExoMars Trace Gas Orbiter studies water vapor and its components as it rises through the atmosphere into space. By looking specifically at the ratio of hydrogen to its heavier counterpart deuterium, the evolution of water loss over time can be traced.

The graphics are simplified so that in a very broad senseshow one of the possible ways of the formation of hydrogen chloride; There are likely additional chemical pathways that could also take place, possibly with other trace gases that ExoMars has not yet discovered. Credit: (C) ESA

It's been a busy week for researchMars. China's Tianwen-1 probe entered the planet's orbit Wednesday after launching from southern China last July as part of the latest step in Beijing's ambitious space program. On the eve of the United Arab Emirates probe "Nadezhda" also successfully entered the orbit of Mars.

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