Amazing discoveries of NASA InSight mission: seismic activity and radiance of the Martian sky
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Six exciting published in the journals Nature Geoscience and Nature Communications describe in detail the discoveries made by the apparatus of InSight, which first landed on Mars in November 2018. News about the final confirmation of the seismic activity on the red planet has appeared in all of the world's media. The researchers found that the seismic activity of Mars meet the same principles as on our planet. However, one study stands out for its strangeness: the team of meteorologists InSight was able to confirm the presence of a strange glow Martian night sky.
Marsotryaseniya and their causes
The First signs of seismic activity on Mars received in April 2019, however, their treatment is gone for almost a year. The data were collected with the help of the SEIS instrument, which consists of three detectors at different frequencies is able to detect the vibrations of the soil. The surface of Mars was much more active than the moon, but calmer than on our planet. According to the authors of the study, in General, Mars is reminiscent of the quiet corners of the Earth, far from the zones of seismic stresses and faults.
Over the 235 days of the Mars probe InSight recorded 174 seismic events,150 of which were high-frequency and 24 — low-frequency. Researchers believe that low-frequency seismic events are of tectonic nature. These 24 events interest scientists most. Different waves travel along the crust of the planet and on the basis of how this happens, researchers can obtain information about the geological layers of Mars, and to determine the location of the source. As the authors of the study, they were able to determine the location of the source in 13 of the 24 events, and two of the strongest was recorded in the Ledges of Cerberus — it breaks and crevices, which are located near the equator of Mars. From the point of view of volcanic activity the Ledges of Cerberus — the youngest geological region of the red planet. The last eruption, the researchers believe that took about 10 million years ago.
Seismic activity of Mars is no longer in doubt
The wind on Mars is observed from midnight until the morning as more cold air descends from the highlands of the southern hemisphere to the Northern hemisphere, where is the camera InSight. During the day, sunlight warms the air, resulting in formation of convective flows. By evening the wind increases and atmospheric pressure decreases. Such favourable conditions allowed the inSight to register seismograph tectonic noise of the most .
Martian vortices
Another still unsolved mystery for scientists is a lot of evidence for the existence of dust devils or "vortices" near the landing site InSight. However, the latest surveillance camera did not record any signs of their existence. As reported by the publication of don Banfield of Cornell University, who leads the team InSight on the science of weather, the researchers almost certainly imagine a lot of vortices, but for some reason they don't seem opaque or are not sufficiently opaque to be seen.
it looks like the sky on the red planet at night. The probe is made by InSight
Air glow
The Series revealed that in the sky of the red planet observed glow, called the "air glow" caused by photochemical reactions in the sky. According to scientists, the source of the glow is the reflection of light from the moons of Mars, and caused by photochemical reactions in the upper atmosphere. A long time researchers assumed that the red planet will appear air glow, but confirmed it only now. These observations were made possible thanks to the many highly sensitive meteorological instruments.
the Fourth planet from the Sun is fraught with many mysteries.
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