"The landing window of Mars' near-Earth day is coming soon, and through the interview, we invited astronaut Zhao Yunhan to answer some difficulties and questions about the first human landing on Mars."

One year and four months have passed since the astronaut trials.

Three and a half years have passed since Du Xiaosheng and Zhao Yunhan decided to join the project.

Since Du Xiaosheng and Zhao Yunhan passed the strict assessment in all aspects last year and showed a level far beyond that of the same batch of astronauts, Zhao Yunhan and Du Xiaosheng, who were determined to become astronauts, have become the focus of attention of astronauts around the world.

And with them, Christina Assmus, an energy expert in charge of the return of Mars, and Paul Ackerman, a professor of bioengineering, also won over John Jr. and others, and formed the world's first Mars exploration team with the two of them.

Because the NEOG window has not yet arrived, the project, which has been in the works for 13 years, is still being intensively deployed and measured.

Eyes from all over the world have gathered here, making the project more and more concerned.

Seeing that he is about to land on Mars, in order to carry out publicity, the world media has invited Du Xiaosheng for an interview.

There is no way, as an extremely important driving expert, Du Xiaosheng even has strict regulations on the time to sleep, but in order to avoid some diseases, Zhao Yunhan, who has just finished the appendix and gallbladder removal surgery, took time out to conduct a short interview in Du Xiaosheng's 'extreme' media company.

At this time, Zhao Yunhan, who had basically completed her recovery, sat in the studio, and in the face of the host's question, she smiled and said:

"There are too many difficulties and problems. But the first difficulty is distance, we all know that Mars is 50 million to 400 million kilometers away from the Earth, and this cycle only occurs once every 15 years. Therefore, if we want to reach Mars, we should try to choose the Martian Near-Earth Sun. ”

"Even the closest distance will take six to nine months to reach Mars, but you will not be able to return until Mars and Earth orbit more closely aligned with the Sun." Zhao Yunhan gently cocked his legs, crossed his fingers with his hands, and replied clearly.

"As for the second difficulty, it is the load of the rocket.

As we all know, the gravity of Mars is about the same as that of Earth, so it is much more difficult to land on Mars than on the moon, astronauts have to overcome the physical and psychological obstacles of long-distance space travel, and the spacecraft has to carry more food and other necessities like water and oxygen...... And so on. ”

"In addition to these things that we are familiar with, the landing and the landing site are huge problems, and we know that NASA's Mars rover, the Curious, landed near the Gaia crater, and we needed to land near the Martian equator, which involves a landing technology that has never been used before in the history of human spaceflight......

Hearing Zhao Yunhan talking, the reporter was also quite curious.

"That sounds quite difficult, but can you tell us about it?"

Zhao Yunhan groaned slightly, and after carefully organizing the language, he replied: "The high energy consumption is to launch the Mars spacecraft and astronauts into the Martian orbit, which requires a rocket with great thrust, and it consumes a lot of fuel back and forth. ”

"And we went to Mars this time, not just to plant a national flag, there are too many things to carry, such as various probes, Mars landing equipment, return equipment, astronaut living equipment, etc.

In addition, the launch of our rocket is not a huge rocket with all the facilities and directly to Mars, as many viewers and friends think, but it requires the spacecraft, return equipment, a lot of fuel and what the astronauts need

Transported to space near Earth, assembled and accelerated with its own engine, and then sent to Mars using the Earth's gravitational slingshot effect! ”

While speaking, Zhao Yunhan blinked and said.

Hearing such a high-end word as gravitational slingshot, the host said in surprise:

"Half a year ago, I heard that Du Xiaosheng added another 4 billion yuan to invest in a heavy-duty launch vehicle, equipped with 39 rocket engines, 106 meters high and weighing about 2.7 tons.

Despite its added weight, it also has a greater payload capacity, with the rocket being able to send 73,800 kilograms of equipment, cargo and passengers out of Earth's orbit, more than three times the payload that a space shuttle can reach at the same altitude. ”

The moderator leaned forward, his gaze revealing a searching light.

Zhao Yunhan did not shy away from it, these materials had been released by the Moth Country Space City as early as a month ago.

In an interview, Christina Assmus even said something about the specific mission of the Mars landing.

"That's right, once we're sure we're right, we'll build a small Mars base as planned.

Then, settle the Mars landing module, as well as an RV with a science laboratory and habitat.

After we settle in, we will assemble a power station for Mars, isolate radiation, and build a test base centered on the base vehicle, generating as much heat as possible and growing food......"

As he spoke, Zhao Yun smiled and added: "Of course, the premise of all this must be smooth." If the landing capsule is not able to return to Earth smoothly. We will not make a landing, we will just put resources and cargo on Mars, and then orbit Mars for a while and then return. ”

The host nodded, expressing his understanding of Zhao Yunhan's statement.

"For this mission, many fans of interstellar exploration are full of expectations and questions, and the question they want to ask the most is: after our astronauts arrive, they will need to deploy an artificial earth environment to grow food, can our Mars landing save such a base?"

Zhao Yunhan did not hesitate, and said directly: "This will be the key thing we will try to land on Mars." At this point, however, the station has been thoroughly tested and we will be collecting rock samples for analysis in a small lab within its habitat module, and trying to drill underground in search of water and any possible life.

If possible, we will try to build a small safety base that will provide the astronauts with safe water, water treatment, and air filtration. Of course, this requires a lot of trial and is not on the list of tasks we have to complete. ”

As the conversation slowly ended, the audience looked forward to the nearly two-year mission to Mars, and many were even excited to see humans land on Mars in their lifetimes.

After all, this will be an important stroke in human history, and Du Xiaosheng will complete a major event that will forever be recorded in history.