{"id":1920,"date":"2025-08-09T16:33:04","date_gmt":"2025-08-09T13:33:04","guid":{"rendered":"https:\/\/planeta21vek.ru\/eng\/?p=1920"},"modified":"2026-02-18T19:38:50","modified_gmt":"2026-02-18T16:38:50","slug":"basic-principles-of-the-europa-clipper-spacecraft-which-studies-the-astrobiological-potential-of-habitable-worlds","status":"publish","type":"post","link":"https:\/\/planeta21vek.ru\/eng\/2025\/08\/09\/basic-principles-of-the-europa-clipper-spacecraft-which-studies-the-astrobiological-potential-of-habitable-worlds\/","title":{"rendered":"Basic principles of the Europa Clipper spacecraft, which studies the astrobiological potential of habitable worlds"},"content":{"rendered":"

Europa Clipper is NASA’s first spacecraft designed to explore an ocean world beyond Earth. Its goal is to find out if the ice-covered moon Europa is habitable. With its antennas and solar panels fully deployed, Europa Clipper is the largest spacecraft ever designed by NASA for a planetary mission. Europa Clipper’s flyby of Mars prepares it for its second gravity assist, a close encounter with Earth in December 2026.<\/p>\n

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Europa Clipper is NASA’s first spacecraft designed to explore an ocean world beyond Earth. Its goal is to find out whether the ice-covered moon Europa is habitable.<\/strong><\/span><\/p>\n

NASA’s Europa Clipper, the largest spacecraft the agency has ever built for an interplanetary mission, will fly 2.9 billion kilometers (1.8 billion miles) from the Kennedy Space Center in Florida to Jupiter’s mysterious icy moon Europa. The spacecraft’s launch is scheduled for Thursday, Oct. 10.<\/p>\n

Data from previous NASA missions has provided scientists with compelling evidence that Jupiter’s moon Europa has a vast saltwater ocean beneath its frozen surface. The Europa Clipper probe will orbit Jupiter and make 49 close flybys to gather data to determine whether its thick, frozen crust contains habitable habitats.<\/p>\n

Europa is one of the most promising places to search for habitable conditions beyond Earth.<\/strong><\/p>\n

There is scientific evidence that the ingredients for life – water, essential chemicals, and energy – may already exist on Europa. This mission will gather the information scientists need to determine for sure. The moon may have an internal ocean twice as large as Earth’s oceans combined, and may also have organic compounds and energy sources beneath its surface. If the mission confirms that Europa is habitable, it would mean that there may be more habitable worlds in our solar system and beyond than we imagine.<\/p>\n

The spacecraft will fly through one of the harshest radiation environments in our solar system – second only to the Sun.<\/strong><\/p>\n

Jupiter is surrounded by a gigantic magnetic field, 20,000 times more powerful than Earth’s. As it rotates, this field traps and accelerates charged particles, creating radiation that can damage spacecraft. Mission engineers have designed a protective shelter to protect sensitive electronics from radiation and have designed orbits that will limit Europa Clipper’s time in the most radioactive regions around Jupiter.<\/p>\n\n

Europa Clipper will orbit Jupiter, studying Europa and flying past the moon dozens of times.<\/strong><\/p>\n

The spacecraft will loop around Jupiter, approaching Europa and making 49 scientific flybys. On each orbit, the spacecraft will spend less than a day in Jupiter’s dangerous radiation zone near Europa before returning. It will repeat the process in two to three weeks, making another flyby.<\/p>\n

Europa Clipper is equipped with the most advanced suite of scientific instruments NASA has ever sent to the Jupiter system.<\/strong><\/p>\n

To determine whether Europa is habitable, Europa Clipper must study its interior, composition, and geology. The spacecraft is equipped with nine scientific instruments and a gravity assist system that uses a telecommunications system. To obtain the best possible scientific data, all of the scientific instruments will operate simultaneously during each flyby. Scientists will then combine the data to create a complete picture of Europa.<\/p>\n

With its antennas and solar arrays fully deployed, Europa Clipper is the largest spacecraft ever developed by NASA for a planetary mission.<\/strong><\/p>\n

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\nEuropa. NASA<\/em><\/p>\n

The spacecraft is 100 feet (30.5 meters) long from end to end and about 58 feet (17.6 meters) wide. That’s larger than a basketball court, thanks in large part to the solar panels, which must be enormous to collect enough sunlight near Jupiter to power instruments, electronics, and other subsystems.<\/p>\n

The way to Jupiter is long.<\/strong><\/p>\n

Jupiter is about 470 million miles (770 million kilometers) from Earth on average; both planets are in motion, and the spacecraft can carry only a limited amount of fuel. Mission planners are sending the Europa Clipper past Mars and then toward Earth, using the planets\u2019 gravity as a slingshot to accelerate the spacecraft. After traveling about 1.8 billion miles (2.9 billion kilometers) over 5.5 years, the spacecraft will fire its engines and enter Jupiter\u2019s orbit in 2030.<\/p>\n

The Europa Clipper project included contributions from US and European institutions.<\/strong><\/p>\n

There are currently about 1,000 people working on the mission, including more than 220 scientists from the United States and Europe. Since the mission was officially approved in 2015, more than 4,000 people have participated in the Europa Clipper project, including contractor and subcontractor teams.<\/p>\n

As part of the Message in a Bottle mission, the spacecraft is carrying a poem by U.S. poet laureate Ada Lim\u00f3n signed by millions of people from nearly every country in the world. Their names have been stenciled onto a microchip attached to a tantalum plate that seals the spacecraft’s electronics bay. The plate also features signals that represent the pronunciation of the word “water” in more than 100 languages.<\/p>\n

The three main scientific objectives of the Europa Clipper mission are to determine the thickness of the moon’s ice cover and its interaction with the ocean beneath it, to study its composition, and to characterize its geology. The mission’s detailed study of Europa will help scientists better understand the astrobiological potential of habitable worlds beyond our own planet.<\/p>\n

NASA’s Jet Propulsion Laboratory, managed by the California Institute of Technology (Caltech) in Pasadena, California, manages the development of the Europa Clipper mission in partnership with the Johns Hopkins University Applied Physics Laboratory (Laurel, Maryland) for NASA’s Science Mission Directorate in Washington. The spacecraft’s main body was developed by APL in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and NASA’s Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall manages the Europa Clipper mission.<\/p>\n

METI International is a scientific organization dedicated to transmitting powerful radio messages to extraterrestrial civilizations.<\/strong><\/span>\u00a0NASA’s Europa Clipper spacecraft, which will travel to Jupiter’s icy moon Europa in October 2024, will deliver a laser message to Earth celebrating humanity’s connection to water. The message pays homage to previous NASA missions that have transmitted similar messages.<\/p>\n

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\nAn illustration of the Europa Clipper spacecraft, which is en route to Jupiter’s moon Europa. NASA\/JPL-Caltech<\/em><\/p>\n

METI International collected audio recordings in 103 languages and decided to convert them into signals that visually represent these sounds. NASA developers etched these signals on a metal plate that protects the spacecraft’s sensitive electronics from Jupiter’s harsh radiation.<\/p>\n

Another part of the message visually displays the wavelengths of water’s components, since water is so important in the search for intelligent life in the universe.<\/p>\n

Placing messages on spacecraft is not a new practice, and Clipper’s message fits into a long tradition started by astronomer Carl Sagan.<\/p>\n

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\nThe Clipper plate is etched with a waveform of the Catalan word for water, “aigua.” NASA\/JPL-Caltech<\/em><\/p>\n

In 1972 and 1973, the two Pioneer spacecraft were sent to Jupiter and Saturn carrying metal plaques engraved with scientific and pictorial messages. In 1977, the two Voyager spacecraft were sent to Jupiter, Saturn, Uranus, and Neptune carrying gold-plated copper records. These records contained educational materials on mathematics and chemistry, as well as music, photographs, sounds of Earth, and greetings in 55 languages.<\/p>\n\n

Because water is essential to life on Earth, searching for its presence elsewhere has been a key part of many NASA missions. Astronomers suspect that Europa, where Clipper is headed, has an ocean beneath its icy surface, making it a prime candidate for the search for life in the outer solar system.<\/p>\n

The 103 spoken words for “water” are recorded to provide a global picture of the diversity of Earth’s languages. On the outside of the Clipper plate, the words are represented as waves that track the varying sound intensities of each word.<\/p>\n

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\nThe Europa Clipper spacecraft is equipped with a tantalum plaque laser-etched with the word “water” in 103 languages. Each word is represented as a waveform. NASA\/JPL-Caltech<\/em><\/p>\n

Clipper’s message also pays homage to astronomer Frank Drake, the founder of SETI (the Search for Extraterrestrial Intelligence), by using a formula named after him, the Drake equation. Using scientific data as well as some guesswork, the Drake equation estimates the number of extraterrestrial civilizations in the galaxy that are currently sending messages into space.<\/p>\n

One widely cited estimate puts the number of extraterrestrial civilizations at one-tenth the average human lifespan in years. For example, if civilizations last a million years, there should be about 100,000 of them in the galaxy. If they live an average of only a century, scientists would estimate that there are about 10 of them.<\/p>\n

Radio astronomers study the universe by studying the radiation emitted by chemical elements in space. They spend much of their time mapping the distribution of the most common chemical substance in the universe: hydrogen.<\/p>\n

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\nThe Drake equation is written on the inside of the Clipper plaque. It’s in Frank Drake’s handwriting. NASA\/JPL-Caltech<\/em><\/p>\n

Hydrogen emits radiation at a specific frequency, called the hydrogen line, which can be detected by radio telescopes. In Project Ozma, the first modern SETI experiment, Drake looked for artificial signals at this same frequency because he believed that scientists on other worlds might recognize hydrogen as something universally significant and transmit signals at that frequency.<\/p>\n

Europa Clipper will likely collide with Jupiter or one of its moons, with Ganymede or Callisto being prime candidates. But if for some reason the mission is changed and the craft survives this fate, people in the distant future with radically different cultures and different linguistic traditions could retrieve it millennia later as an ancient artifact.<\/p>\n

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\nThe inside of the Europa Clipper image shows the wavelengths of hydrogen and hydroxyl emission lines. These represent components of water. The range of frequencies between these lines is called the “water hole.” NASA\/JPL-Caltech<\/em><\/p>\n

To ensure that at least part of the message would be understandable to scientists in the distant future, a graphic representation of the same frequency that Drake used in Project Ozma was developed: the hydrogen line, along with a frequency called the hydroxyl line.<\/p>\n

When hydrogen (H+) and hydroxyl (OH-) combine, they form water. Scientists call the range of frequencies between these lines the “water hole.” The water hole represents the part of the radio spectrum where astronomers conducted the first SETI experiments. The metal plate also includes diagrams showing what hydrogen and hydroxyl look like at the atomic level.<\/p>\n