Friday, April 26, 2019, 5:00 pm – Has it finally happened? NASA's InSight Lander may have discovered its first Marsquake!
NASA's newest Mars lander, InSight, which landed on the Fourth Planet from the Sun in late November 2018, has been deployed for months to discover so-called Marsquakes. "
Well, based on data they provide to NASA, it seems like she's actually discovered one! "
"InSight's first readings continue the science that began with NASA's Apollo missions," said Bruce Banerdt InSight, Principal Investigator, NASA's Jet Propulsion Laboratory (JPL), NASA's news release said on Tuesday. "So far we've been collecting background noise, but this first event officially opens a new field: Marseismology!"
Did this NASA lander receive his first MARSQUAKE? LISTENING
In the video we hear first of all the vibrations caused by the air flowing over the ground. After that is the signal of a probable Marsquake. Finally, the seismometer picked up the vibrations of the lander's robot arm movement. The vibrations were processed and transformed into a sound we could hear.
According to NASA, the tremor was discovered on April 6, 201
The InSight SEIS instrument (center) rests on the Martian surface in this photo taken on April 26, 2019 (Sol 146). Covered by a protective white dome, this instrument is patiently waiting to absorb any vibrations from the floor. InSight's other primary instrument, the Heat and Physical Property Pack (HP ^ 3), is visible on the left, as is the edge of the lander deck. Credit: NASA / JPL-Caltech
While NASA announces that SEIS's most sensitive detectors have picked up three more vibrating groups on March 14 (Sol 105), April 10 (Sol 132), and on the April 11 (Sol 133), these were much weaker than the event of April 6 (Sol 128).
"The Martian Sol 128 event is exciting because its size and longer duration correspond to the profile of the moonquakes discovered during the Apollo missions on the lunar surface. In the press release, Lori Glaze, director of the Planetary Science Division at NASA During the Apollo missions of the 1960s and 1970s, seismometers placed on the surface by the astronauts were able to pick up quakes on the moon and show that they were seismically active.
It is not yet clear what The mission team is still trying to determine the source, but the shocks that have been felt so far are not enough to give the scientists meaningful insights into the interior of Mars, but as more and more of the larger ones are discovered allow mission scientists to slowly form a picture of what Mars looks like inside.  (DON & # 39; MISS: Life on Mars? NASA InSight.) May help solve this puzzle)
Here on earth, earthquakes occur while the various tectonic plates that compose the surface of the planet shift and shift against each other, pressing against each other or rolling past each other. When the scientists started recording the vibrations caused by these vibrations, they discovered something remarkable. They could actually use these vibrations to give us a really good idea of what the interior of our planet looked like.
The interior of the earth. Photo credits: Kelvinsong / Wikimedia Commons (CC BY-SA 3.0)
As far as Mars is concerned, we have been sending spaceships and robots there for decades. So far, they have only explored the space around the planet, the atmosphere and the surface of the planet.
Some orbiting spacecraft have seen with the ground penetrating radar a short distance below the surface, certainly. Scientists can construct a pretty good model of what they think is the interior of Mars of course . However, what the interior of the planet really looks like is still technically unknown.
That's why NASA sent InSight.
InSight, which stands for Interior Exploration with Seismic Investigations, Geodesy, and Heat Transport brought along three things to carry out its mission:
- a seismometer called Seismic Experiment for Interior Structure (SEIS),
- a heat probe called Heat and Physical Properties Package (HP ^ 3) and
- ] a weather station for detecting temperature, wind, and air pressure
SEIS is there to detect tremors passing through the Martian surface. These vibrations can be caused by the movement of material within the planet or by the wind on the ground or by meteoroids that hit the surface. Once fully deployed, HP ^ 3 will measure the planet's temperature and tell us how fast Mars is cooling. The weather station is there in the first place, so scientists can tell the difference between actual Marsquakes and "noise" caused by wind and pressure and temperature changes (but it will also give us valuable information about the weather on Elysium Planitia ). 19659003] With the data from all these three, we should get a clearer picture from Mars to the core.
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