A joint spacecraft of Europe and Japan is going to use the gravitational catapult effect of Venus for a short “gravitational dance” to change the course of the spacecraft in space. The final goal of the U.S. spacecraft’s maneuvering to the east by midnight on Wednesday is expected to be achieved in the next five years. < / P > < p > the spacecraft carrying out this planetary mission is bepicolombo, which actually wraps two spacecraft into one. The spacecraft consists of a spacecraft supervised by ESA and another spacecraft supervised by JAXA. Once they reach mercury, the spacecraft will orbit the small world separately and independently, collecting data about Mercury’s structure, atmosphere, magnetic field and so on. At the end of July, 2018, the spacecraft will enter the long journey of mercury. Because of Mercury’s position in the solar system, the road to mercury is long. Because Mercury is so close to the sun, any spacecraft trying to visit the planet will feel the extraordinary gravity from the giant star – which causes the spacecraft to accelerate. < / P > < p > in designing the bepicolombo mission, engineers decided to use the inner planets as brake pedals to slow down the spacecraft. “In fact, you need a lot of energy to put a spacecraft in orbit around Mercury,” Johannes benkhoff, a project scientist at ESA’s bepicolombo, told the verge. “In order to get this kind of energy, there are two options: one is to have a lot of fuel, which will make your spacecraft bulky and heavy. Another option is to use the help of planets. ” < / P > < p > during the seven-year journey, bepi Columbo plans to fly over the planets nine times, using the gravity of these worlds to slow down the spacecraft and slightly change its orbit around the sun. Bepicolombo has already overflew the earth in February. At 11:58pm EDT on Wednesday, the spacecraft will make the first of two flyovers to Venus. After that, bepicolombo will make six flyovers of mercury and then fall into orbit around the planet in December 2025. < / P > < p > flying over Venus is crucial to the spacecraft’s flight path, but this maneuver also provides a good opportunity for bepicolombo to study the planet. Now there are many scientists eager to study Venus. In September, scientists announced that they had detected traces of a gas called phosphine in the atmosphere of Venus – a gas most associated with life on earth. The test is far from enough to say that there is life on Venus, but scientists are eager to learn more about the gas and where it may have come from. The bepicolombo team has received a number of requests for the spacecraft to look for phosphine in the clouds of Venus, benkhoff said. “Of course, the detection of phosphine has a great attraction for Venus,” he said. “A lot of people ask us,” what can you do with phosphine? Can you watch it. < / P > < p > he said the team would be happy to look for the gas, but he didn’t expect good data, because bepi Columbo’s instrument was optimized for mercury. “I wonder if our instruments are sensitive enough to detect it,” benkhoff said. “It doesn’t mean we don’t look at it, but the opportunity for us to contribute here is very, very unlikely.” However, engineers do want to study many other types of gas that are thought to exist in Venus’ clouds. And they expect to be able to take some beautiful pictures with a few selfie cameras. < / P > < p > although this Venus flight is exciting, benkhoff pointed out that the next one will be closer. During this flight, bepicolombo will be about 6650 miles from the planet’s surface. But in November, the spacecraft will fly over Venus again, only about 341 miles away. In many ways, benkhoff said, this is the second scientific test of gravitational catapult maneuver. “We hope that we can even get better results and higher resolution in that flight.” The report shows that the number of app store purchases soared in the first half of this year due to the impact of covid-19