The Perseverance rover landing went just as planned and this new robotic inhabitant of Mars is ready to explore it.
Fall in style
The mission Mars2020 It left Earth in July of last year and today reached its destination: Mars, where the Perseverance rover had to make a careful descent, in one of the most dangerous parts of its mission.
About fifteen minutes before reaching the surface of Mars, Perseverance had to separate from the main spacecraft that carried her on her journey of about 200 million kilometers.
For stop the natural spin of the capsule that carried Perseverance, some thrusters were ignited, which also served to accommodate it in the best way to prepare its entry into the Martian atmosphere.
She then had to shed some of the extra weight she was carrying, to get the proper fall speed, which led her to finally enter the atmosphere, where she began an autonomous descent.
Though Mars does not have an atmosphere comparable to Earth’sAnyway, the little gas it has around it (mainly carbon dioxide), serves to slow down the capsule that carried Perseverance.
The friction also made that fall very hotBut Perseverance could withstand all of that: her capsule was a heat shield, protecting her from temperatures of thousands of degrees.
Since Martian air can have denser parts that would change Perseverance’s orientation a bit, but all of that was considered since his landing was planned, so just before he finished going down, he had an adjustment to make it in position. adequate.
In those settings it released more weight, which made it lighter, also helping to slow it down.
But still, it was going very fast: more than 1500 km / hbut don’t worry, that’s what he was wearing a parachute for, which helped him slow down to about 500 km / h, when then the capsule that protected it from the heat entering the atmosphere was released.
Hello, world. My first look at my forever home. #CountdownToMars pic.twitter.com/dkM9jE9I6X
– NASA’s Perseverance Mars Rover (@NASAPersevere) February 18, 2021
Came to take photos
When it was less than 2 km above the Martian soil Perseverance used a terrain recognition system that he used to make his landing safer. At that point he no longer had the parachute, and was guided by a rocket system, which contributed to its deceleration.
The images he observed of the ground approaching 320 km / h, he compared them with a database, which helped him to identify if the terrain was safe to continue descending in that direction or to make any adjustments if necessary.
About twelve seconds before hitting the ground, his rocket « backpack » lined up Perseverance, so that she was ready to hit the ground, and the happy ending was achieved: when all six wheels of Perseverance hit the ground. He was already on Mars.
And of course one of the first things he did was send us a couple of photos, which show a bit of the jezero crater, a place that will now be your home and workplace.
Actually the mission of Perseverance only began a little while ago, but it has certainly shown that the perseverance of humanity can bring very good results.