An image showing the inflorescence exploration rover personalization taking samples. [출처=NASA 홈페이지, 재배부 및 DB 금지]
(San Francisco = Yonhap News) Correspondent Seong-ho Jeong = “Check the touchdown! Perseverance has safely arrived on the surface of Mars and is ready to begin searching for traces of life in the past!”
Swati Mohan, director of guidance, navigation, and control at the NASA’s Jet Propulsion Research Institute (JPL), said this when it was confirmed that the video exploration rover’Purservance’ had settled on Mars at 5:58 a.m. Korean time. Hit.
According to CBS, although social distancing was taken, the flight engineers at the institute cheered and clapped as their worries turned to relief when the landing was confirmed.
The landing of Perseverance was evaluated as’the most difficult landing attempted on Mars’. That’s why NASA scientists called the landing ‘7 minutes of terror’.
This is because, during the process of entering the atmosphere, the friction with the atmosphere had to endure the high temperature equivalent to the sun’s surface and a braking force that is 10 times the Earth’s gravity, but to reach the target landing point accurately.
Perseverance entered the atmosphere of Mars on this day at a speed of 12,000 miles per hour (approximately 19,300 km per hour), but to land safely, it had to slow down to zero within 7 minutes. This entry speed is more than 20 times the average cruise speed of an airliner, 925 km/h.
Also, for this reason, the protective thermal armor plate of Perservance is designed to withstand about 1,299 degrees Celsius, which is the level of melting steel, and it is 70 feet in diameter (about 21 m) to be used after slowing down to less than 1,000 miles per hour (about 1,600 km). ) Was also equipped with a parachute.