Scientists revealed: remarkable discovery on Mars – Archyde

Image: European Space Agency (ESA)

Astronomers observed bright radar reflections off the planet’s south pole in 2018. At the time, these reflections were thought to indicate liquid water beneath the surface.

But a new study from the University of Texas in the US found that these radar reflections are likely a “mirage.”

The research team argues that the observed reflections are actually volcanic rock buried beneath the ice.

“For the water to be so close to the surface, you need both a very saline environment and a strong, locally produced heat source,” said planetary scientist Cyril Grima.

However, this does not correspond to our ideas. I know this area.

During the research, an imaginary sheet of ice covering the entire planet was added to the radar map of Mars. Because the team wanted to know what geological features in other parts of the planet would look like on radar under about a mile of ice.

After that, the same bright reflections as in 2018 appeared in many places at different latitudes of the red planet.

The team noted that the locations where these reflections occur corresponded to the locations of the volcanic plains.

This could mean that iron-rich lava flows form rocks with similar reflections that can be confused with water. However, this is not the only possible explanation for the reflections.

“Mines in dry riverbeds are another possibility,” Grima said:

“In either case, asking what that is could answer important questions about the history of Mars.”

Although the research, published in the peer-reviewed journal Geophysical Research Letters, may seem disappointing, scientists are actually hopeful.

“There’s no trapped liquid water under the South Pole, but there’s a lot of water ice on Mars, including the thick layer at the poles,” Grima said.

The new study indicates that Mars was wetter in the past.

Source: The Independent

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