Landing on Mars

Описание: [...0.7s]Mars has been called the Death Planet with good reason. It has been a spacecraft graveyard. More than half of the mission sent here have failed.NASA's success rate is better than other nations, [...1.1s] but in 1999, the space agency's Jet Propulsion Laboratory experienced four unexpected and painful public losses when an orbiter, a lander, and two micro probes upon arriving were never heard from again. [...2.4s]As if to taunt its victories, Mars dared that it be challenged again in 2003, a time the Red Planet would be the nearest to earth that it had been in 60,000 years [...1.1s] last time these two planets were this close. Neanderthals roamed the earth, [...4.1s] wanting to regain its confidence.JPL took up the Martian dare [...0.6s] and then doubled down by agreeing to build and land on Mars, not one [...0.6s] but two rovers, [...0.9s] something never before attempted. [...2.8s] This is the triumphant story of spirit and opportunity. Two rovers that survived the ordeal of landing on Mars [...17.9s] demise. 10, 9, 8, 7, 6, Green board.5, 4, 3, 2, 1 engine start and lift off the deltitude rocket carrying the spirit from earth to planet Mars.Road relief tick rate is in vehicles responding. [...6.5s] We're approaching Mach 1 [...2.1s] and there we go. We've exceeded the supersonic, uh, speed and the engine positions look good. Just watch me get up and off the pad [...0.7s] and shoot off into the sky.It is a fantastic feeling [...1.3s] for video system working perfectly, sending back an immaculate image. We're now passing an altitude of four nautical miles. It brings so much closure to what you've been doing that you have to be happy about that.Just coming up on 2,000 miles per hour, passing t plus 60 seconds, our solid motors have burned out. But until you see [...0.6s] the launch vehicle separate [...0.7s] and spin down [...1.5s] like a nice Chris Jenison from the fairing [...0.8s] and turn on the star scanners and exercises propulsion system.Find out where the temperatures are gonna level out, understanding whether the solar panels are generating the power that's supposed to be.Until you see all that kind of settle in, it was hard for me to relax. [...1.1s] Now we're looking at a height of average of 90.0 notable miles, [...1.0s] extremely close to our nominal predicted orbit. [...2.4s] Hey, we've entered a coast phase of from the mission. [...6.9s]The journeys to Mars for spirit and opportunity would take seven months, [...0.6s] crossing a distance of some 300 million miles. [...1.8s] This cruise portion of a planetary mission can be a relatively quiet time, but not for these two spacecraft. [...5.4s]So just in the last hour, we haven't moved very much. A lot of people think cruise is easy because we're just cruising along. You know there was this animation of the mur spacecraft and he saw it launch and he saw the excitement of the different stages coming off and then starts going on its way to Mars and sails off from the sunset. And then it says seven months later.Well, those seven months, that's really what we're concerned with. We have to work hard. [...3.3s]Probably Mark 16.6. [...1.4s] While navigators plotted trajectories, the flight team practiced the complex landing sequences that are called EDL, short for entry, descent, and landing, [...0.5s] but also known as [...0.7s] 6 minutes of Terror. [...2.3s]EDL is the most complicated and dangerous part of any mission trying to reach the Martian surface [...0.7s] in a matter of minutes. Multiple spacecraft transformations have to take place. It begins with separating from the cruise stage. [...2.3s]Next, the rover, enclosed in a capsule, hits the atmosphere at 12,000 miles per hour. [...1.1s] Four minutes later, the speed has been reduced to 1,000 miles per hour, slow enough for a supersonic parachute to deploy without shredding. [...4.2s]Then the heat shield jettisons, [...0.8s] and the lander begins repelling down a metal tape and a rope bridle. [...1.1s] Meanwhile, a computer is calculating information about motion and altitude.Only seconds remain before the airbags inflate, rockets fire, [...1.1s] metal tape and bridal rope are cut, and the lander free falls to the surface.The first bounce could be as high as a four story building, followed by more bounces that could go on for half a mile before the lander with the rover tightly wrapped inside comes to arrest [...1.0s] hopefully in one piece. [...5.2s]The 6 minutes of EDL terror is still months away. [...1.4s] Part of this time is used for training what engineers call operational readiness tests, [...1.7s] lucky peanuts. [...1.7s]The tests are meant to be as realistic as possible, including the JPL tradition of munching on peanuts for good luck. But this test is not going according to plan like this has been the [...0.8s] Cds should not be listing at this time.We have urges of death that is not, and data [...0.7s] they crosses your favorite vault [...0.6s] unknown to the team.