What is Voyager 2?

The Voyager 2 probe was successfully launched at the Kennedy Space Center on August 20, 1977. It is the second of two space probes developed by NASA to fly outside the solar system.

The Voyager 2 probe is known as the most valuable probe because it visited many planets and their moons: it was closest to Jupiter on July 9, 1979, and found several more rings around Jupiter. And took pictures of Io, showing its volcanic activity. It was closest to Saturn on August 25, 1981. Later, using Saturn's gravity, like "slingshot", it was closest to Uranus on January 24, 1986, and discovered 10 previously unknown natural moons. The Voyager 2 probe was closest to Neptune on August 25, 1989. Both Voyager probes carry gold-plated bronze records in preparation for the spacecraft to communicate with them when they are captured by intelligent creatures from outer space. There are recorded birdsongs, wind sounds, human conversations, and so on. ^[2]

Voyager 2 was launched on August 20, 1977.

Launched 33 years ago, the unmanned probe Voyager 2 spacecraft was orbiting the edge of the solar system last month and transmitted some strange and difficult-to-decipher signals that even NASA scientists were powerless .

Hausdorff said, "The spaceship appears to have been reprogrammed or abducted. We don't know the truth at this time."

Nonetheless, NASA did not comment on Hausdorff's remarks, saying that "the cause of the signal error is likely to be a malfunction of the ship's computer memory", and they are working to solve the problem of data transmission. ^[4]

In the fall of 1989, the Voyager 2 spacecraft passed Neptune and sailed into the distance after 12 years of navigation. It carries a metal plate that tells the story of the earth and contains various places of interest and sounds on the planet. This has frightened some people into thinking that people are inadvertently leaking their locations to aliens from other worlds, who might conquer people. Those who have this idea do not know the size of the universe, nor do they know the chances of Voyager 2 being discovered by anyone. It takes 12 years for Voyager 2 from Earth to Neptune. What kind of world will it reach? Voyager 2 drifted under the influence of the gradual weakening of the gravitational field of the sun (as it moved away from the sun) and the very small (almost zero) effect of the gravitational fields of various stars. With these gravitational effects in mind, one can know exactly where Voyager 2 will go.

People know all the nearby stars, and Voyager 2 will not be able to crash into any of them. Of course, there may be dark objects in space that people do nt know about, and Voyager 2 may collide with a floating planet or asteroid, but this chance seems too small, even if considered, it is useless. The sun emits a "solar wind," which sprays a stream of charged particles in all directions. As they move away from the sun, the jets become thinner and thinner until they disappear into interstellar space. In 2012, Voyager 2 will cross the reach of the solar wind. By 8571 (almost 6558 years from 2013), Voyager 2 will be 0.42 light-years away from the sun, or about 2.5 trillion miles. However, even the closest star is ten times this distance. By that time, Voyager 2 will be the same as the one currently 5.9 light-years (35 trillion miles) away from people.

The US-launched Voyager 2 probe carries a special record. This is a puppet gift to aliens, and use it to find the traces of aliens.

This bronze record is 30.5 centimeters in diameter and has a gold-plated exterior. The 90-minute "Voice of the Earth" was recorded on one side of the record, including greetings from Earth people in 60 different national languages, 35 natural sounds, and 27 ancient and modern world famous songs. On the other side, 115 photographs reflecting the human civilization of the earth were recorded. In addition, there were also congratulatory messages from US President Carter and UN Secretary-General Waldheim.

Among the greetings are Mandarin, Cantonese, Min Nan, and Wu Chinese. Among them, a lady from Guangdong sent kind greetings to the aliens in Cantonese: "How are you all? I wish you all peace, health and happiness." A woman In Xiamen dialect: "Hello friends in space! Have you ever eaten? Please come and sit here when you are free." The greeting in Wu language was: "Good luck to you all!" The last man said in Mandarin: "Everyone Alright? We miss you so much, please come here to play when you have time! "Among the world's famous ancient and modern songs, including the" Flowing Water " music in" Alpine Flowing Water " performed with Guqin . The pictures of humans on the earth include the majesty of the Badaling Great Wall and the style of the Chinese family feast.

This "Voice of the Earth" record can be stored in space for 1 billion years. ^[5]

"Traveler 2" space photography selection (10 photos)

Beijing time on November 29, 2011. According to the US "Time" magazine, after 34 years of flight, the American Voyager 2 probe has switched to the standby attitude control thruster work on November 4 according to the instructions of the ground engineer. Saving energy ensures that future tasks continue. ^[6]

As of 2011, Voyager 1 was about 11 billion miles (about 18 billion kilometers) from Earth, and Voyager 2 was 9 billion miles (about 14 billion kilometers) from Earth.

As of October 2009, Voyager 2 made a tilt of -54.55 ° and a right ascension of 19.737 hrs, pointing at the telescope constellation. Voyager 2 is at 90.557 astronomical units from the sun and leaves the solar system at a rate of 3.268 astronomical units (about 15.493 kilometers per second) each year.

On August 30, 2007, after a 30-year long trek, the Voyager 2 spacecraft terminated at 85 astronomical units from the earth (1 astronomical unit is the average distance between the earth and the sun, which is 150 million kilometers). The shock wave was directly observed in situ, this is the first time in human history that information has been returned to the edge of the solar system.

Due to the changes in the dynamic pressure of the solar wind and the effects of fluctuations, the termination of the shock wave is not static, but it moves back and forth in the radial direction, causing multiple times

Voyager 2

Cross the Voyager 2 spacecraft. Through detailed analysis of the detection data, new important findings were obtained: (1) Generally speaking, shock waves will change supersonic fluid (Mach number greater than 1) into subsonic speed (Mach number less than 1), and terminate the shock wave. Downstream is still supersonic flow; (2) The temperature of the downstream plasma is more than 10 times lower than theoretically expected. The main reason for the inconsistency with the shock characteristics we are familiar with is due to the large number of neutral components in the interstellar medium. These neutral components (mainly neutral hydrogen atoms) and ionized solar wind protons generate charge ions (Pickup Ions) through charge exchange. Most of the energy generated by the reduction of solar wind kinetic energy is supplied to the new particles, and only a small part of the energy is used to heat the solar wind plasma, which causes the temperature of the solar wind plasma downstream of the terminating shock to be lower than expected, resulting in a lower sound velocity and leading to termination of the shock The downstream Mach number is still greater than one. As the Voyager 2 spacecraft continues to explore the heliosphere area, more and more of the natural mysteries at the edge of the solar system will be revealed by humans.

From late April to early May 2010, Voyager 2 traveled to the edge of the solar system. On April 22, Voyager 2 sent some very strange signals to Earth. After 13 hours, the signals were successfully received by NASA's deep space antenna. Unfortunately, NASA scientists have not been able to crack it. The famous German UFO expert Hausdorff boldly asserted that Voyager 2 may have been hijacked by aliens. "It looks like the ship was hijacked and the program was rewritten so we can't decipher it," Hausdorff said. NASA did not respond to Hausdorff's views, and scientists and engineers thought that the storage on the ship There may be a glitch in the system. Staff are actively tinkering. ^[7]