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Solvej Balle's newly translated speculative novel, On the Calculation of Volume (parts I and II), examines the numbing effects of time through the old trope of being stuck in a single day. It is an effective meditation

Solvej Balle's newly translated speculative novel, On the Calculation of Volume (parts I and II), examines the numbing effects of time through the old trope of being stuck in a single day. It is an effective meditation

An AI analysis finds that since the 1970s, speeches by US Congress members have shifted to favour language such as “fake news” and “mislead” over words such as “science” and “statistics”

An AI analysis finds that since the 1970s, speeches by US Congress members have shifted to favour language such as “fake news” and “mislead” over words such as “science” and “statistics”

Experts share why Trump-mandated cuts to the NOAA's Space Weather Prediction Center share is a big deal.

Marking a major milestone in the preparation of ESA’s Biomass satellite for its scheduled 29 April liftoff, experts have completed the critical and hazardous process of fuelling the satellite.

Discover when, how and where to watch the smallest full moon of the year take center stage on April 12.

What can exozodiacal dust, also called exozodi, teach astronomers about identifying Earth-like exoplanets? This is what a recently submitted NASA white paper—which highlights key findings from the annual Architecture Concept Review—hopes to address as a team of researchers discussed how exozodi orbiting within a star’s habitable zone (HZ) could interfere with detecting Earth-like exoplanets. This study has the potential to help scientists better understand observational constraints of observing Earth-like exoplanets and what improvements could be made for future telescopes and instruments to overcome these constraints.

Scanning the skies for galaxies, Canadian astronomer

The Da Vinci Glow

A United Launch Alliance Atlas V rocket will launch Amazon's first big batch of Project Kuiper broadband satellites today (April 9), and you can watch it live.

There have been several claims of quantum computers performing at a level impossible to match with a classical computer – most of which have been refuted. Could there be a mathematical reason why this keeps happening?

There have been several claims of quantum computers performing at a level impossible to match with a classical computer – most of which have been refuted. Could there be a mathematical reason why this keeps happening?

A baby has been born after being conceived via IVF performed by a machine, with a medical professional merely overseeing the process

A baby has been born after being conceived via IVF performed by a machine, with a medical professional merely overseeing the process

SpaceX to launch new Intuitive Machines moon lander, lunar satellites in 2027

3 min read

NASA’s Juno Back to Normal Operations After Entering Safe Mode NASA’s Juno flies above Jupiter’s Great Red Spot in this artist’s concept. NASA/JPL-Caltech

The spacecraft was making its 71st close approach to Jupiter when it unexpectedly entered into a precautionary status.

Data received from NASA’s Juno mission indicates the solar-powered spacecraft went into safe mode twice on April 4 while the spacecraft was flying by Jupiter. Safe mode is a precautionary status that a spacecraft enters when it detects an anomaly. Nonessential functions are suspended, and the spacecraft focuses on essential tasks like communication and power management. Upon entering safe mode, Juno’s science instruments were powered down, as designed, for the remainder of the flyby.

The mission operations team has reestablished high-rate data transmission with Juno, and the spacecraft is currently conducting flight software diagnostics.The team will work in the ensuing days to transmit the engineering and science data collected before and after the safe-mode events to Earth.

Juno first entered safe mode at 5:17 a.m. EDT, about an hour before its 71st close passage of Jupiter — called perijove. It went into safe mode again 45 minutes after perijove. During both safe-mode events, the spacecraft performed exactly as designed, rebooting its computer, turning off nonessential functions, and pointing its antenna toward Earth for communication.

Of all the planets in our solar system, Jupiter is home to the most hostile environment, with the radiation belts closest to the planet being the most intense. Early indications suggest the two Perijove 71 safe-mode events occurred as the spacecraft flew through these belts. To block high-energy particles from impacting sensitive electronics and mitigate the harmful effects of the radiation, Juno features a titanium radiation vault.

Including the Perijove 71 events, Juno has unexpectedly entered spacecraft-induced safe mode four times since arriving at Jupiter in July 2016: first, in 2016 during its second orbit, then in 2022 during its 39th orbit. In all four cases, the spacecraft performed as expected and recovered full capability.

Juno’s next perijove will occur on May 7 and include a flyby of the Jovian moon Io at a distance of about 55,300 miles (89,000 kilometers).

More About Juno

NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA’s New Frontiers Program, which is managed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington. The Italian Space Agency (ASI) funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Various other institutions around the U.S. provided several of the other scientific instruments on Juno.

More information about Juno is available at:

https://www.nasa.gov/juno

News Media Contacts

DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov

Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov

Deb Schmid
Southwest Research Institute, San Antonio
210-522-2254
dschmid@swri.org

2025-049

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Last Updated

Apr 09, 2025

Related Terms

• Juno

Explore More

2 min read For Your Processing Pleasure: The Sharpest Pictures of Jupiter’s Volcanic Moon Io in a Generation

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1 year ago

1 min read Juno Marks 50 Orbits Around Jupiter

NASA’s Juno mission completed its 50th close pass by Jupiter on April 8, 2023. To…

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2 years ago

5 min read 10 Things: Two Years of Juno at Jupiter

NASA’s Juno mission arrived at the King of Planets in July 2016. The intrepid robotic…

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7 years ago

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3 min read

NASA’s Juno Back to Normal Operations After Entering Safe Mode NASA’s Juno flies above Jupiter’s Great Red Spot in this artist’s concept. NASA/JPL-Caltech

The spacecraft was making its 71st close approach to Jupiter when it unexpectedly entered into a precautionary status.

Data received from NASA’s Juno mission indicates the solar-powered spacecraft went into safe mode twice on April 4 while the spacecraft was flying by Jupiter. Safe mode is a precautionary status that a spacecraft enters when it detects an anomaly. Nonessential functions are suspended, and the spacecraft focuses on essential tasks like communication and power management. Upon entering safe mode, Juno’s science instruments were powered down, as designed, for the remainder of the flyby.

The mission operations team has reestablished high-rate data transmission with Juno, and the spacecraft is currently conducting flight software diagnostics.The team will work in the ensuing days to transmit the engineering and science data collected before and after the safe-mode events to Earth.

Juno first entered safe mode at 5:17 a.m. EDT, about an hour before its 71st close passage of Jupiter — called perijove. It went into safe mode again 45 minutes after perijove. During both safe-mode events, the spacecraft performed exactly as designed, rebooting its computer, turning off nonessential functions, and pointing its antenna toward Earth for communication.

Of all the planets in our solar system, Jupiter is home to the most hostile environment, with the radiation belts closest to the planet being the most intense. Early indications suggest the two Perijove 71 safe-mode events occurred as the spacecraft flew through these belts. To block high-energy particles from impacting sensitive electronics and mitigate the harmful effects of the radiation, Juno features a titanium radiation vault.

Including the Perijove 71 events, Juno has unexpectedly entered spacecraft-induced safe mode four times since arriving at Jupiter in July 2016: first, in 2016 during its second orbit, then in 2022 during its 39th orbit. In all four cases, the spacecraft performed as expected and recovered full capability.

Juno’s next perijove will occur on May 7 and include a flyby of the Jovian moon Io at a distance of about 55,300 miles (89,000 kilometers).

More About Juno

NASA’s Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Juno mission for the principal investigator, Scott Bolton, of the Southwest Research Institute in San Antonio. Juno is part of NASA’s New Frontiers Program, which is managed at NASA’s Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington. The Italian Space Agency (ASI) funded the Jovian InfraRed Auroral Mapper. Lockheed Martin Space in Denver built and operates the spacecraft. Various other institutions around the U.S. provided several of the other scientific instruments on Juno.

More information about Juno is available at:

https://www.nasa.gov/juno

News Media Contacts

DC Agle
Jet Propulsion Laboratory, Pasadena, Calif.
818-393-9011
agle@jpl.nasa.gov

Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov

Deb Schmid
Southwest Research Institute, San Antonio
210-522-2254
dschmid@swri.org

2025-049

Share

• 
  
  
• 
  
  
• 
  
  
• 
  
  

Details

Last Updated

Apr 09, 2025

Related Terms

• Juno

Explore More

2 min read For Your Processing Pleasure: The Sharpest Pictures of Jupiter’s Volcanic Moon Io in a Generation

Article


1 year ago

1 min read Juno Marks 50 Orbits Around Jupiter

NASA’s Juno mission completed its 50th close pass by Jupiter on April 8, 2023. To…

Article


2 years ago

5 min read 10 Things: Two Years of Juno at Jupiter

NASA’s Juno mission arrived at the King of Planets in July 2016. The intrepid robotic…

Article


7 years ago

Keep Exploring Discover Related Topics

Missions

Humans in Space

Climate Change

Solar System

A SpaceX Falcon 9 rocket will launch an uncrewed Dragon cargo ship packed with tons of supplies to the International Space Station on April 21.

The U.S. Space Force is leaning more heavily into its allies around the world and unveiling a new International Partnership Strategy, the service's chief said today.