The Perseverance Spacecraft will arrive at Mars with a bang: How will NASA listen

Illustration of perseverance during its descent to the surface of Mars.


when NASA’s Mars 2020 rover lands on the surface of the red planet Thursday, he will hold a microphone that will hopefully be able to capture his landing and tumbling sounds. But that wouldn’t be the only device listening to the rover’s arrival.

The Mars Insight probe It is located less than 2,000 miles (about 3,000 kilometers) from Jezero Crater, as the persistence is set to land. Unlike the more attractive rovers that are designed to tour and explore the landscape on Mars, one of Insight’s primary functions is to simply sit down and listen to swamps and other seismic activities.

Insight has already successfully detected earthquakes. But as it is the only station for earthquake detection on the planet, its science team has had trouble determining the location and magnitude of earthquakes. This is easy to do on Earth, as there is an entire network of seismic sensors making it easy to calibrate and calculate the details of a particular jerk.

Scientists now hope to use the subsidence of perseverance to get a better picture of Mars’ internal structure and how seismic waves propagate through it. Hopefully, Insight will be able to capture different stages of landing using its sensors. In essence, this will be the first time Insight has «heard an» earthquake «and also knows exactly where it is coming from. This critical data will allow researchers to refine their internal models on Mars and calibrate the seismic detection forces in Insight.

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«Fortunately, the entry, descent and descent of the persistent rover is so energetic that it produces signals that can be detected by seismometers,» wrote Ben Fernando, a member of the Insight science team. For conversation.

The actual touch of persistence is supposed to be a smooth, undetectable landing over a long distance, but the more active parts of the process Fernando refers to the sonic boom from the spacecraft as it slows down during the descent, called the effect of two large weights Cruise mass balance devices, And are also known as CMBDs.

According to Fernando and colleagues The signals that may result from the sonic boom and are found to be unlikely to be detected by Insight. However, 154-pound (70 kg) CMBDs would be dumped 620 miles (1,000 km) above the surface of Mars, and should result in small craters when they impact the planet at high speed.

«This would transfer a tremendous amount of energy to the Earth, which would produce seismic waves,» Fernando explains. We estimated that these signals would be ‘loud’ enough to be detected by InSight seismometers about 40% of the time in the best case scenario. The uncertainties in our estimates are large, mainly because no one has ever attempted to detect an impact that occurred in These distances before. »

Regardless of its success, the attempt to spot a spacecraft landing on Mars with another distant probe will be the first.

Make sure to keep up with everything we’ve got Covering the perseverance’s arrival to Mars, Which was set at 12:55 PM PDT on Thursday.

Continued Space Calendar 2021 for CNET To keep up with the latest space news this year. You can even add it to your Google Calendar.

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Olga Dmitrieva

Любитель алкоголя. Возмутитель спокойствия. Интроверт. Студент. Любитель социальных сетей. Веб-ниндзя. Поклонник Бэкона. Читатель

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