Tuesday , July 27 2021

Mysterious rumblings from inside Mars detected by NASA spacecraft | Science and Technology News

Scientists at NASA reported an exciting detection of the Insight landing craft on Mars – mysterious rumble from within the planet.

Researchers believe that seismic events could be caused by a sudden release of energy from inside the planet, but the nature of this oscillation remains unknown and confusing.

Surprisingly, new rumblings are believed to have arisen on Mars at a location called Cerberus Fossae. The other two candidate events before It is believed to originate.

Clouds are drifting above the dome-covered seismometer known as SEIS, belonging to NASA's InSight spacecraft on Mars.  Image: NASA / JPL-Caltech
Dome-covered instrument recently detected rumbling

Although these rumblings are sometimes referred to as “Marsquake,” the planet is not believed to have a similarly active tectonic system that caused earthquakes like Earth’s.

And, curiously, previous seismic events detected by the space agency’s InSight vehicle. reached the surface of the planet In 2018 – almost exactly one Martian year ago, or two Earth years, it occurred in the northern summer of Mars.

Scientists predicted that this season would offer the landing craft the best opportunity to listen to earthquakes because the winds on the planet would become calmer.

InSight’s seismometer, called the Internal Structure Seismic Test (SEIS), is so sensitive that it must be covered with a dome-shaped shield to prevent it from freezing from wind and during use.

Despite this, the wind can still cause enough vibration to mask the seismic signals sought, and so the NASA team began isolating the sensitive cable.

To do this, the team placed the bucket on the end of InSight’s robotic arm to polish the soil on top of the bucket-shaped shield and let the cable run down.

The aim is to allow the soil to come as close to the shield as possible without impeding its impermeability to the ground.

NASA's robotic probe InSight detected and measured what scientists believe to be a marsquake.  Image: NASA / JPL-Caltech
Researchers learn to distinguish seismic signals

Burying the seismic link itself is one of the goals of the next phase of the mission, which NASA recently extended from two years to December 2022.

But despite the interruption caused by the wind to InSight’s seismometer, the off-road vehicle does not give much of a hand to the remaining dust-covered solar panels.

The power began to wane as Mars moved further away from the sun, but energy levels are expected to recover from July when the planet started to approach the sun again.

Until then, the team will turn off InSight’s tools one by one so that he can hibernate, only wake up periodically to check his own health, and send a message to Earth.

NASA said the team hopes to keep the seismometer on for another month or two before turning it off.

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