Following a six-month battle to regain communication with its Mars Environment and Unstable Evolution (MAVEN) spacecraft round Mars, NASA introduced the conclusion of the MAVEN mission on June third. The mission, which launched to the pink planet in 2013, studied the Martian ambiance and its evolution for 11 years — over a decade longer than initially anticipated.
Although MAVEN is now not making new measurements at Mars, the information it collected stays extremely worthwhile for planetary scientists and continues to be analyzed. One staff of scientists just lately used MAVEN information to find an atmospheric impact in Mars’ ambiance that deflects incoming photo voltaic wind within the absence of a magnetosphere.
NASA concludes MAVEN’s 11-year mission at Mars
MAVEN launched to Mars in November 2013 atop an Atlas V rocket, entered orbit in September 2014, and formally started scientific observations in November 2014. Chosen in 2008 because the second mission underneath NASA’s Mars Scout Program, MAVEN featured a set of eight scientific devices designed to probe the Martian ambiance and examine the lack of its gases over time. MAVEN was the primary NASA mission to conduct in-depth research into the historical past and evolution of the pink planet’s ambiance.
MAVEN launches to Mars atop an Atlas V. (Credit score: NASA)
On the time of its launch, MAVEN’s major mission was anticipated to final two years, with one yr devoted to scientific operations in orbit round Mars. Because of the good well being of the spacecraft and the standard of the information it was returning, MAVEN’s science section was prolonged a number of instances, first from June 2015 by means of September 2016, after which once more from October 2016 by means of September 2018.
Finally, by the tip of its mission, MAVEN had operated at Mars for 10 years longer than initially deliberate. Throughout this time, it continued to gather atmospheric measurements and assist communications between Earth and different Martian spacecraft — most notably NASA’s Curiosity and Perseverance rovers.
NASA’s Deep Area Community (DSN) misplaced contact with MAVEN on Dec. 6, 2025. The DSN is a worldwide community of huge radio antennas that ship and obtain indicators from NASA’s fleet of spacecraft all through the photo voltaic system. When contact was misplaced, the satellite tv for pc had been working in a 4,500 km by 130 km orbit round Mars since 2019, finishing roughly 6.6 orbits per day. Usually, when MAVEN’s orbit takes it behind Mars, groups briefly lose contact with the spacecraft till it emerges and reestablishes contact with the DSN. Nonetheless, on Dec. 6, the DSN obtained no indicators from the craft after it orbited behind Mars.
Small quantities of information from the spacecraft had been recovered after the lack of sign, indicating that MAVEN had entered protected mode attributable to an unexpectedly excessive spin price, main groups to consider its orbit had been disrupted. Curiously, earlier than passing behind Mars, MAVEN telemetry confirmed that each one spacecraft methods had been functioning nominally. NASA convened an anomaly overview board in February to evaluate potential restoration efforts and the possible state of the Mars orbiter.
The overview board concluded that the spacecraft’s batteries had seemingly been drained by the rotation, leaving MAVEN with out energy and unable to speak with Earth, which means the spacecraft can’t be recovered — ending its mission. Nonetheless, the reason for the anomaly stays unknown, and the overview board is anticipated to proceed its investigations and supply leads to a remaining report later this yr. Within the meantime, NASA will begin the official decommissioning procedures for MAVEN and its staff of scientists, and start archiving the mission’s whole dataset to be used in future research of Mars’ ambiance.
LIVE: Leaders with NASA's Mars Environment and Unstable Evolution (MAVEN) mission are offering an replace on spacecraft operations and discussing the mission's accomplishments. pic.twitter.com/QDrhHUQu5P
— NASA (@NASA) June 3, 2026
“The science MAVEN has given us is essential to informing what sort of radiation safety and security measures we should take earlier than sending people to Mars. The information collected from MAVEN will proceed to supply worthwhile perception into Mars for many years to return,” stated Louise Prockter, director of NASA’s Planetary Science Division.
“The MAVEN mission has actually superior our understanding of the Martian ambiance and evolution. This dataset has had an incredible affect on the sector. Our science staff is exceptionally pleased with all of those superb discoveries,” stated MAVEN principal investigator Shannon Curry of the Laboratory for Atmospheric and Area Physics on the College of Colorado Boulder.
MAVEN discovers a photo voltaic wind deflection phenomenon at Mars
Though the spacecraft is now not energetic round Mars, its information continues for use by groups of scientists around the globe. One such staff, led by Christopher Fowler of West Virginia College, used MAVEN information to find a photo voltaic wind deflection course of inside Mars’ ambiance. The phenomenon operates equally to processes in Earth’s magnetosphere that deflect the photo voltaic wind away from Earth.
Throughout this phenomenon, referred to as the Zwan-Wolf impact, charged particles ejected by the Solar are confined inside magnetic constructions in Mars’ ambiance referred to as flux tubes. The impact was first found in 1976 and — till Fowler et al.’s discovery — was believed to happen solely in planetary magnetospheres, not in atmospheres. Mars lacks a robust magnetosphere like Earth, so the Zwan-Wolf impact as an alternative happens throughout the planet’s ionosphere, which lies beneath 200 km above the Martian floor. This atmospheric area comprises vital numbers of charged particles, now identified to be distributed by way of the Zwan-Wolf impact.
Artist’s impression of the Zwan-Wolf impact occurring inside Mars’ ambiance. (Credit score: LASP/CU Boulder)
“When investigating the information, I hastily seen some very fascinating wiggles. I’d by no means have guessed it could be this impact, because it’s by no means been seen in a planetary ambiance earlier than,” Fowler defined.
Not like Earth, Mars’ magnetosphere is induced by interactions between the photo voltaic wind and the planet’s ionosphere. Thus, attributable to fluctuating quantities of photo voltaic wind being ejected by the Solar, Mars’ magnetosphere can range drastically in measurement and form. MAVEN’s orbit introduced the spacecraft into the outer areas of Mars’ ambiance, so when a big photo voltaic storm impacted Mars, Fowler’s staff studied the magnetosphere and noticed sudden fluctuations within the planet’s magnetic subject. A number of of MAVEN’s devices are designed to review the Martian ionosphere, and after reviewing their information, the scientists decided that the Zwan-Wolf impact was the one rationalization for the magnetic subject fluctuations they noticed.
The photo voltaic storm seemingly amplified the impact throughout the ionosphere, permitting Fowler’s staff to find it. Curiously, the staff famous that the impact could also be occurring repeatedly within the ionosphere with out assistance from photo voltaic storms, however MAVEN’s instrumentation wouldn’t have been in a position to detect it.
MAVEN totally deployed throughout testing earlier than launch in 2013. (Credit score: NASA/Kim Shiflett)
“Nobody anticipated that this impact might even happen within the ambiance. That’s what makes this much more thrilling. It introduces fascinating physics that we haven’t but explored and a brand new manner the Solar and area climate can change the dynamics within the Martian ambiance,” Fowler stated.
The invention of the Zwan-Wolf impact on Mars will additional planetary scientists’ understanding of how area climate impacts various kinds of planetary our bodies, significantly these with little to no magnetosphere, corresponding to Titan and Venus. Moreover, as humanity pushes additional into the photo voltaic system, understanding how area climate impacts Mars’ local weather is crucial for getting ready future astronauts and spacecraft that go to the pink planet.
“Figuring out how area climate interacts with Mars is crucial. The MAVEN staff continues making new discoveries with our datasets and discovering these hyperlinks between our host star and the pink planet,” stated Curry.
(Lead picture: Artist’s impression of MAVEN at Mars. Credit score: NASA)
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