Skip to main content

Juice spacecraft heading to spaceport ahead of mission to study Jupiter’s moons

Out solar system will soon be getting a new explorer, as a mission to study the moons of Jupiter readies for launch.

The European Space Agency’s Jupiter Icy Moons Explorer mission, or JUICE, is scheduled for launch in just a few months’ time, so the spacecraft is now being packed up at its testing location in Toulouse, France, for transport to its launch location in French Guiana.

A commemorative plaque celebrating Galileo’s discovery of Jupiter’s moons was unveiled on ESA’s Jupiter Icy Moons Explorer, Juice, on 20 January 2023. The spacecraft had just completed its final tests before departing Airbus Toulouse, France for Europe’s Spaceport in French Guiana to count down to an April launch.
A commemorative plaque celebrating Galileo’s discovery of Jupiter’s moons was unveiled on the European Space Agency’s Jupiter Icy Moons Explorer, called JUICE, on January 20, 2023.  ESA/M.Pedoussaut

The spacecraft recently went through its final round of testing, including a thermal vacuum test to ensure it can handle the cold temperatures of space, and the system validation test in which the immediate steps after launch are simulated, like the deploying of booms and arrays that will happen in space.

The aim of the mission is to study three of Jupiter’s largest moons, Europa, Ganymede, and Callisto, each of which is believed to have liquid water oceans beneath icy crusts. The presence of liquid water makes each of these moons a potential target in the search for life beyond Earth, so JUICE will study each one using cameras and spectrometers. It will also learn about the local environment of Jupiter, such as its magnetosphere and plasma environment.

Juice is scheduled for launch in 2022 on a seven-year journey to the Jovian system. Its tour will include a dedicated orbit phase of Jupiter, targeted flybys of Europa, Ganymede and Callisto, and finally nine months orbiting Ganymede – the first time any moon beyond our own has been orbited by a spacecraft. In the artist’s impression, which is not to scale, Ganymede is shown in the foreground, Callisto to the far right, and Europa centre-right. Volcanically active moon Io is also shown, at left. The moons were imaged by NASA’s Galileo spacecraft; Jupiter is seen here with a vivid aurora, captured by the NASA/ESA Hubble Space Telescope.
Juice is scheduled for launch in 2022 on a seven-year journey to the Jovian system. Its tour will include a dedicated orbit phase of Jupiter, as well as targeted flybys of Europa, Ganymede and Callisto. It will also spend nine months orbiting Ganymede – the first time any moon beyond our own has been orbited by a spacecraft. spacecraft: ESA/ATG medialab; Jupiter: NASA/ESA/J. Nichols (University of Leicester); Ganymede: NASA/JPL; Io: NASA/JPL/University of Arizona; Callisto and Europa: NASA/JPL/DLR

The spacecraft will go on a long journey, first traveling to Jupiter for eight years before entering into orbit around Ganymede. This will be the first time a spacecraft has orbited a moon other than Earth’s. The mission will perform a complex series of flybys of planets in the inner solar system to get it on its way, then it may also do a flyby of an asteroid before arriving at the Jovian system and doing another series of flybys to allow it to get close to the moons.

“This is the biggest deep-space mission we’ve ever launched, and it needs to nimbly orbit the moons of the largest planet in the Solar System using no less than 35 flybys,” said Andrea Accomazzo, flight operations director for the mission, in a statement. “JUICE’s exploration of Jupiter and its moons will require us to perform a decade of operations we’ve never done before, and a lot could go wrong. In these weeks of simulations, we’ll have every possible problem thrown at us, so that we can handle any situation in space.”

Launch of the mission is scheduled for April this year.

Georgina Torbet
Georgina is the Digital Trends space writer, covering human space exploration, planetary science, and cosmology. She…
NASA’s Juno spacecraft to pass within 1,000 miles of volcanic moon Io
This image revealing the north polar region of the Jovian moon Io was taken on October 15 by NASA’s Juno. Three of the mountain peaks visible in the upper part of image, near the day-night dividing line, were observed here for the first time by the spacecraft’s JunoCam.

NASA's Juno spacecraft, currently in orbit around Jupiter, will soon be making a close flyby of one of the planet's most dramatic moons, Io. On Saturday, December 30, Juno will come within 1,000 miles of Io, making it the closest spacecraft to that moon in the last 20 years.

Io is an intriguing place because it shows signs of significant volcanic activity, making it the most geologically active body in the solar system. It hosts over 400 active volcanoes, which periodically erupt due to hot magma inside the moon created by friction caused by the gravitational pull between Jupiter and its other large moons.

Read more
NASA tests moon elevator for Artemis III mission
Two NASA astronauts test an elevator for the Artemis III lunar mission.

NASA’s highly anticipated Artemis III mission will see the first woman and first person of color step onto the lunar service in a moment that will also mark the first human lunar landing since 1972.

If the space agency sticks to its schedule, the mission will take place in 2025, but there’s still much work to be done to ensure that that happens.

Read more
Juice spacecraft gears up for first ever Earth-moon gravity boost
Artist's impression of ESA's Jupiter Icy Moons Explorer (JUICE) approaching Earth.

The European Space Agency (ESA)'s Juice mission is heading to Jupiter, but it isn't traveling all that way in a straight line. Instead, like most solar system missions, the spacecraft makes use of the gravity of other planets to give it a push on its way.

But Juice will be making an unusual maneuver next year, carrying out the first gravity assist flyby around both Earth and the moon. This week, the spacecraft made its longest maneuver yet to get into position ahead of the first of its kind flyby in 2024.

Read more