How important is the presence of liquid water?
It is now widely believed that Mars has enough water.
However, the surface of the planet is so cold, this water exists only as ice.
In order for life to survive on any planet, many scientists believe that holding liquid water is essential for Earth.
Since technology has enabled mankind to keep an eye on Mars, humans are looking for clues that there was water on the red planet.
Did water flow on the surface of Mars?
The Mariner 9 mission has revealed evidence of waterlogging in river beds and canyons, as well as weather fronts and fog on Mars in 1971.
Later missions of Viking orbiters, first launched in 1975, revealed more details about how water flowed over the surface and the carved valleys.
Several studies have investigated the presence of liquid water for decades. In 2000, the first evidence of liquid water was discovered on Mars.
It was claimed that the galaxies seen at the bottom of the planet were formed by flowing water.
Scientists have cited debris and soil deposits left behind as evidence of the removal of water at some point in the history of the Red Planet.
Over the next few years, however, there was intense debate over the composition of these shots.
Evidence of ice in geological samples from Mars
Spirit and Opportunity, twin rovers found evidence of the presence of water involved in the rock in 2007, when a wheel of Spirit broke a piece of rock into pieces.
Analysis of the silica-rich layer from scratch states that it was formed in the presence of liquid water.
In 2007, Phoenix Lander was collecting geological specimens and they disappeared a few days later.
Scientists thought these were pieces of ice. This assessment was later confirmed when the lander detected water vapor in a sample.
In 2012, while exploring several rocks that came into contact with liquid water millions of years ago, curiosity flared up on an ancient seashore.
In 2012, Curiosity (pictured) was wandering over an ancient seashore while examining several rocks that came into contact with liquid water millions of years ago.
Repetitive operative lines and controversy cause it
Features known as Recurring Slope Lineine (RSL) were first identified in 2011.
These dark lines populate the region of Mars with a sharp tendency.
The researchers speculated that these may be due to the uninterrupted flow of liquid water on the planet’s new steep shores.
In June 2013, curiosity found such strong evidence that water well enough to drink once flowed to Mars. In September of the same year, the first scoop of soil analyzed by Curiosity discovered that the fine matter on the planet’s surface contains two percent water by weight.
In 2015, NASA claimed to have discovered the first evidence of liquid water on Mars at the present time.
The space agency said its Mars Reconnaissance Orbiter (MRO) has yet to provide the strongest evidence that liquid water flows occasionally on the current Mars.
In 2017, NASA issued another statement denouncing its initial investigations.
Features known as Recurring Slope Lineine (RSL) were last identified in 2011 (pictured). These dark lines populate the region of Mars with a sharp tendency. The researchers speculated that these may have been caused by the simultaneous flow of liquid water
It said that the dark features that came down with the steep risk on the Red Planet were actually granular flows, where grains of sand and dust descended to form dark lines instead of darkening the land by shaking water.
Figures from the MRO reveal that lines exist in steep opals just enough for the dry grain to descend to the top of the active mounds.
Also in 2017, scientists provided the best estimates for water on Mars, claiming that it once had more liquid H2O than the Arctic Ocean – and that the planet held these oceans for more than 1.5 billion years.
Research has shown that Mars had enough time and water to succeed, but over the past 3.7 billion years the red planet has lost 87 percent of its water – leaving the surface barren and dry.
A Mediterranean lake
In a study published in the journal Science, ESO researchers have now discovered the first precise evidence for liquid water on Mars.
Using radar images from the Mars Express search, the ESO team found a 12-mile-long underground lake filled with liquid water.