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News and Features Archive

[ 13 November 2019 ]
2019 Jupiter Observing Season Wraps Up

By early November, the angular separation between Jupiter and the Sun closed significantly, making radio observations of the Jovian emissions less likely to succeed. The best chances to catch the planet's radio emissions is shortly after sunset. Please share any observing reports with other RJers.

[ 9 July 2019 ]
2019 Jupiter Season Past the Midpoint

Jupiter reached opposition on June 10, 2019. The "King of the Planets" has been passing your local meridian earlier and earlier each evening. It is still prime season for Jupiter observations in the evenings when the Earth's ionosphere is transparent to 20 MHz signals. Keep observing!

[ 28 June 2018 ]
Jupiter Season Update

Currently (June 2018) Jupiter continues moving closer to the Sun in the evening sky. It will reach conjunction (when Jupiter is behind the sun) on Nov 25, 2018. Although listening conditions will probably begin to deteriorate in August due to the opacity of the earth’s ionosphere after sunset, observations into the early fall months may still be fruitful. Terrestrial lightning storms during the summer months may limit observations. Remember – disconnect your antenna if lightning is nearby.

The next Jupiter observing season will begin in early February 2019.

[ 20 March 2018 ]
Report of January 6th Io-C storm

On January 6th there was an Io-C storm with LCP L-burst emissions from 15 MHz to 22 MHz S-burst emissions also appear in the lower frequencies. Calibrated Radio Jove receiver/dipole pair measured a peak emission of 471 kK equivalent antenna temperature at 1027 UT.

View Jim Brown's report of his observations of that storm.

[ 16 November 2017 ]
Jupiter Season 2017–2018

Jupiter will appear far enough from the Sun in the morning sky for RJ observers to capture its radio emissions starting in mid-December 2017. It will reach opposition (the point where it is on the direct opposite side of the Earth from the Sun) on May 9, 2018.

[ 13 June 2017 ]
Jupiter Observing well past mid-point

The King of Planets, Jupter, was at opposition on April 7, 2017. This means that the current observing season is mostly behind us now. The 2016-17 Jupiter observing season is expected to end sometime in mid-August of this year.

[ 15 November 2016 ]
Jupiter Observing Season is here

The 2016-17 Jupiter observing season is under way as some observers are starting to detect Jupiter after the conjunction with the Sun on 26-Sept-2016. While the season has no official beginning, we generally observe about 4.5 months on either side of the opposition date when the observing conditions are better. The 2017 Jupiter opposition date is 7-April 2017. Thus, the 2016-17 Jupiter observing season will run from about 15-Nov-2016 through 15-Aug-2017.

[ 23 August 2016 ]
NASA's Juno Spacecraft Collecting Data at Jupiter

The Juno spacecraft successfully entered orbit around Jupiter on July 4, 2016. It was placed into a polar orbit to study Jupiter's composition, gravity field, magnetic field, and polar magnetosphere. See the Juno Mission Pages for the latest information.

Read Chuck Higgins' overview of the Juno space mission.

[ 23 August 2016 ]
Get Ready for 2017's North American Total Solar Eclipse

On Monday, August 21, 2017, a total eclipse of the Sun will make a path across the continental U.S. With less than a year to go, it is time to prepare for your experience of this event. We are asking Radio JOVE observers in North America and beyond to make radio observations before, during, and after this eclipse.

Read Thieman and Higgins' bulletin article "Radio Jove Participation in the Great American Eclipse of 2017".

[ 17 May 2016 ]
Jupiter Observing Season

The 2015-2016 season for observing Jupiter's radio emissions began in November, 2015 and will end in June 2016. Jupiter is now past opposition and transiting before midnight. Several good radio noise storms have been observed. At transit, Jupiter reaches an elevation angle of about 60 degrees for mid-latitude North American stations - check your antenna phasing. We encourage all observers to submit their observations to the Jove archive (details at )

[ 17 May 2016 ]
Solar Observations

Several good solar bursts have been observed recently - don't miss this opportunity while the sun is still active. The Sun is now north of the equator, well positioned for antennas phased for Jupiter. Solar bursts are strong and easy to receive - even with a single dipole. It's a good time of the year for solar observations, before the summer lightning season starts. We encourage all observers to submit their solar observations to the Jove archive.

[ 12 January 2016 ]
NASA's JUNO Spacecraft Nearing Encounter with Planet Jupiter

The spacecraft is to be placed in a polar orbit to study Jupiter's composition, gravity field, magnetic field, and polar magnetosphere. JUNO is planned to reach orbit around Jupiter on July 4, 2016.

Read Chuck Higgins' overview of the JUNO space mission.

[ 12 January 2016 ]
Jupiter Observing Season

The current season for observing Jupiter's radio emissions began in November, 2015. Jupiter is now in the pre-dawn skies and the Earth's ionosphere is generally transparent to 20 MHz signals. Several radio noise storms have been observed - we encourage all observers to submit their observations to the Jove archive. At transit, Jupiter reaches an elevation angle of about 60 degrees for mid-latitude North American stations - check your antenna phasing.

[ 12 January 2016 ]
Solar Observations

Several good solar bursts have been observed recently - don't miss this opportunity while the sun is still active. Even though the Sun is now far to the south for us northern hemisphere dwellers and our antennas are phased for Jupiter, solar bursts are still strong and easy to receive - even with a single dipole.

[ 20 August 2015 ]
Detecting Galactic Background Emissions with the Radio JOVE Telescope

In a recent article, Dave Typinski and Wes Greenman describe how Radio JOVErs can observe nighttime transits of the core of our Galaxy. See their write-up for the details.
[ Link ]

[ 20 August 2015 ]
NASA's JUNO Spacecraft to arrive at Jupiter July 4, 2016

JUNO is expected to enter a polar orbit around Jupiter on or around next July 4. It will be used to study Jupiter’s atmosphere and magnetic field.

Juno will remain in orbit until October 2017, when mission planners will de-orbit the spacecraft for a fatal descent into the Jovian atmosphere.

[29 August 2014 ]
Report from the Astronomy Club at Anne Arundel (MD) Community College

The AACC Observatory reports on its RJ observing results in a Jove Bulletin article.

Read their article.

[26 June 2014 ]
Radio JOVE Conference via Webcast

The Radio JOVE Team, together with the Society of Amateur Radio Astronomers (SARA), will hold a joint meeting this summer at the National Radio Astronomy Observatory in Green Bank, West Virginia. This year's SARA meeting will take place from Sunday June 29 through the morning of Friday July 4, 2014.

For those who can't attend in person, the SARA and Radio JOVE Conference will be webcast by NRAO. The video stream address will be mms:// The video streaming format is Windows Media Video; playable on Windows, Macs or Linux computers with the required codec installed (e.g., in Windows Media Player, VLC for Mac/Linux, or mplayer on Linux).

We are set to broadcast Monday June 30 thru Thursday July 3. The SARA conference schedule can be found at The Radio JOVE conference schedule can be found at

[13 May 2014 ]
Radio JOVE at Dayton, OH Hamvention May 16-18, 2014

The Radio JOVE Team, together with the Society of Amateur Radio Astronomers (SARA), will have a display table at the 2014 Dayton Hamvention.

Information on the Hamvention is available at the event's website.

[14 February 2014 ]
Radio JOVE Conference at Greenbank July 2-4, 2014

The Radio JOVE Team, together with the Society of Amateur Radio Astronomers (SARA), is pleased to announce a joint meeting this summer at the National Radio Astronomy Observatory in Green Bank, West Virginia. This year's SARA meeting will take place from Sunday June 29 through the morning of Friday July 4, 2014.

Registration information and a detailed schedule of the Radio JOVE conference activities can be found on the SARA web site.

[13 May 2014 ]
Jupiter Season Over - Next one starts in Fall, 2014

Jupiter is now in the Western sky after sunset. By the time the ionosphere becomes transparent to 21 MHz radio waves, it is well outside the beam of the RJ dipole system, making it difficult to catch further Jovian radio storms at this point. Jupiter will emerge from the daylight into the pre-dawn skies again in the September-October 2014 time frame.

Remember that you can observe Solar bursts with your RJ radio telescope and submit those observations to the Radio JOVE Data Archive.

[27 June 2013 ]
New Location for Radio JOVE Data Archive

For about a decade the Radio Jove project has been enabling participants to share their observations through the Radio Jove archive; approximately 6000 observations are now available online. However, in early 2012 the data submission function to the archive was turned off. For the last several months we have been researching other options to re-enable this option and I am pleased to announce that the archive is now ready to receive your observations once again!

The location of the archive has changed. Please visit:

Please note that submitters of Radio JOVE data will need a new password. Please contact Leonard Garcia for more information.

[11 April 2013 ]
Jupiter Observing Season has ended

As Jupiter sinks into the evening twilight, another season for observing it's natural radio emissions draws to a close.

We encourage observers to use their Radio JOVE telescope to monitor Solar radio emissions.

[13 November 2012 ]
NEW Radio JOVE Email Distribution List!!!

As we approach the maximum of the solar cycle, and a new Jupiter observing season begins, we anticipate the number of emails to our distribution list announcing observations of activity to increase. This will be good news to some observers but may impose a burden in e-mail traffic for others. Accordingly we have set up a new distribution list for those observers interested in submitting and receiving messages specifically about (often time sensitive) Jove observations.

Consequently, we ask that all emails announcing observation results use the new email distribution list: RADIOJOVE-DATA@LISTS.NASA.GOV

If you wish to receive or send messages about observation results you will need to subscribe to this new list. To subscribe to this new list simply go to and enter your e-mail address. (The rest of the form is optional.) This new email distribution list is specifically for announcing Jove program observations of activity from Jupiter, the Sun and other relevant radio sources detectable by Radio Jove equipment. Typically these observations will include SkyPipe plots and/or spectrograms depicting emission activity.

We also ask that all emails that are mainly between two individuals not be distributed to the entire list.

The original radiojove distribution list will be used for announcements of coming events, discussion of Jove specific technical questions, and other Jove related general interest materials. This is the distribution list that everyone who registers with the Jove program is automatically signed up for.

[5 September 2012 ]
Improvements coming to the JOVE Data Archive site

An updated Jove Archive site is in the works and uploads will be accepted again in the near future. Details about this new archive will be posted here soon.

[23 January 2013 ]
Recent non-Io-A emissions from Jupiter

In past years most Jove observations have focused on Io - related emissions. Recently, many periods of non-Io-A related activity have been observed in addition to the Io-related emissions. The non-Io-A activity is predominately L-bursts.

We encourage observers to also monitor during non-Io-related times as determined using their Radio Jupiter Pro software. Simply stated this means observing during times when the central meridian longitude of Jupiter is in the range of 225-280° as seen on the CML/Io Phase plane display in Radio Jupiter Pro.

[19 September 2012 ]
Radio JOVE to provide radio astronomy exhibit at the 2012 Starry Night event

Gainesville, Florida — Local Radio JOVE members will provide a radio astronomy exhibit at the annual Starry Night event at the University of Florida Museum of Natural History from 6pm to 10pm on November 30th, 2012. Starry Night is a program designed to bring awareness of astronomy and science to the public by offering free activities and displays. The radio astronomy exhibit will be set up outdoors, near the optical telescopes.

Attendees will be able to see a Jove receiver in action with a real-time strip chart, plus an SDR-14 functioning as a real-time spectrograph. Recorded examples of Jovian S-bursts and L-bursts will also be heard.

More info:

[26 June 2012 ]
Radio JOVE and the 2nd USA Science and Engineering Expo

Dr. Ata Sarajedini, Professor and Associate Chair of the University of Florida Astronomy Dept. lead the UF group that participated in the USA Science and Engineering Expo in Washington D.C. on April 28-29. The UF theme for this year was "Gators in Space". He kindly carried about 60-70 RJ brochures that he completely distributed during the expo.

The Radio Jove project thanks Dr. Sarajedini and the University of Florida for their support

[3 June 2012 ]
Radio JOVE at 2012 Dayton Hamvention

The Society of Amateur Radio Astronomers' booth at the 2012 Dayton ham radio "Hamvention", May 18-20 in Dayton, Ohio, U.S.A. provided visitors with information and items about Radio JOVE. Our thanks to Bill and Melinda Lord from SARA for their help in promoting our project.

[ 6 Dec 2011 ]
Jupiter Season Passes Midway Point

On October 29th, Earth made its closest approach of the year to Jupiter. With the Sun, Earth, and Jupiter lined up, Jupiter was at opposition and transited at local midnight. As we pull ahead of the King of Planets, Jupiter will be high in the sky after sunset. Radio observations can now be made during those more civilized evening hours. Its a great time to listen. December got off to a fantastic start with a phenomenal Io-B storm on December 1.

[ 03 Nov 2011 ]
Radio JOVE at the 2011 Starry Night event

Gainesville, Florida — Radio astronomy was represented by several Radio JOVE members at the annual Starry Night event at the University of Florida on November 3rd.

Thumbnail of RJ participants at Starry Night
Radio JOVE participants (L to R) Dave Typinski, Francisco Reyes, and Wes Greenman.

Starry Night is a program designed to bring awareness of astronomy and science to the public by offering free activities and displays. The outdoor portion consisted of several telescopes viewing the Moon, Jupiter, and several close binary stars. Radio astronomy was represented by the Radio JOVE display.

The Radio JOVE exhibit consisted of a single dipole strung between two palm trees (it is Florida, after all!), a Jove receiver with a real-time strip chart, and an SDR-14 with a real-time spectrogram. Visitors were also treated to recorded examples of Jovian S-bursts and L-bursts.

More info:

[ 02 Nov 2011 ]
Jupiter Kicks Butt

Thumbnail of Io-B storm chart Fantastic Io-B storms received recently. Some bursts were over a million degrees (about 15 dB above the galactic background). There has also been enhanced non-Io-A activity. Jupiter just passed opposition so it is transiting before midnight now. Its a great time to observe - so dust of your Jove antenna, fire up that radio, and submit your results to the Jove archive. We have been thru a long spell of rather weak Jupiter signals, but now conditions are much more favorable (the Jovicentric declination De of Earth is near its peak value). We expect Jupiter to turn in a great performance over the next few years.

[ 29 Aug 2011 ]
RJers catch nighttime solar burst

Thumbnail of night-time solar burst chart While it has been known to happen, observing a solar radio burst in the middle of the night is a rare event. On August 4, 2011, a number of folks in the Western Hemisphere captured a strong solar burst near midnight, U.S. Eastern time (03:58Z). The same event was observed elsewhere, including just before sunrise in Western Europe.

[ 29 Aug 2011 ]
2011 Jupiter Season well underway

Radio JOVE participants have been capturing lots of radio outbursts from the King of the Planets. Fire up your RJ decametric telescope and see what storms you catch. Submit your observations to the Radio JOVE Data Archive.

[ 11 May 2011 ]
Radio JOVE and SARA at the 2011 Dayton Hamvention

Photo of booth at 2011 Dayton HamventionThe Radio JOVE project teamed with the Society of Amateur Radio Astronomers to promote amateur radio astronomy at the ham radio "Hamvention" in Dayton, Ohio on May 20 - 22. There were Radio JOVE kits there for purchasing as well as other radio-related projects of interest.

See the Hamvention web site for more information about this event.

[ 15 March 2011 ]
Photo: RJ at the Mars Desert Research Station - 2011

Here is the Radio Jove telescope at the Mars Desert Research Station (MDRS), a project of The Mars Society, an international non-profit humans to Mars organization. Located near Hanksville, UT.

Pictured: Crystal L. Latham, Chief Scientist of MDRS crew 100 B of ILEWG EuroMoonMars.

Photo of Utah Mars Desert station
[Photo has been red enhanced just for fun. - RJ Webmaster]

See the May 2003 JOVE Bulletin for an article on Radio JOVE at the MDRS.

[ 2 March 2011 ]
Who can record the last Jupiter signals of this observing season?

Jupiter is rapidly moving toward the Sun's position in the sky and now appears near the western horizon in the evening twilight. This signals the end of another Jupiter observing season. Or does it? During times of minimum solar activity Jupiter can be observed during daylight hours because the earth's ionosphere is reasonably transparent to decametric radio waves.

Jupiter signals have been received as recently as mid-February by RJer Dave Typinski. Even though solar activity is on the rise it might be worth taking a daytime listen for Jupiter as it heads for conjunction with the Sun on April 6, 2011.

[ 28 February 2011 ]
Radio JOVE booth at the Orlando HamCation

Photo of booth at Orlando HamcationIn February Radio JOVE shared an exhibit table at the 2011 HamCation with the Society of Amateur Radio Astronomy (SARA) at the Central Florida Fairgrounds in Orlando, Florida. Our folks chatted with numerous folks at the event, and answered many of their questions.

+ Orlando HamCation Web site

[ 27 December 2010 ]
Impressive December 6, 2010 Jupiter Io-B Storm

20.1MHz polarimeter plotAs the season winds down Jupiter intensity has been increasing as of late. Weak emission was detected around 0018 UT but increases towards the storm end to above 2 million degrees Kelvin.

spectrograph chartThe 20.1 MHz polarimeter shows primarily Right Circular Polarization (Red) throughout the storm as expected from the Io-B source. The spectrograph shows wideband L-burst emission cut-up by the horizontal Faraday Lanes. Modulation Lanes can also be seen as 45 degree emission from high to low frequencies cutting across the lower part of the spectrum.

[ 28 July 2010 ]
Radio Jove gives keynote speech at SARA Meeting

Dr. Higgins speaking at SARA MeetingThe Radio Jove project was honored to accept a request by the Society of Amateur Radio Astonomers to present the keynote speech at this year's annual meeting at the National Radio Astronomy Observatory in Green Bank, WV, July 4-7, 2010. ( The presentation generated some interesting discussion and it was also possible to inspect a state-of-the-art example of a Radio Jove setup brought by Bill and Melinda Lord.

Next year's SARA conference will be June 26-29, 2011 so make your plans now.

[ 8 June 2010 ]
Radio Jove Teacher Education

GAVRT Teacher Workshop folks wit dishRadio Jove worked with the Goldstone Apple Valley Radio Telescope (GAVRT) program for teacher education workshops, in part, to help with Juno Mission education and public outreach. On July 19-23, 2010 twelve teachers learned how to use the GAVRT and Radio Jove telescopes with their students in a classroom. Teacher workshops open to all K-14 educators. If you are an educator or know an educator who might be interested in using GAVRT and Radio Jove in their classrooms, please contact any member of the Radio Jove team.

+ See GAVRT Web site

[ 16 May 2009 ]
Radio JOVE's booth at the Dayton Hamvention

Photo from previous Dayton HamventionDuring May 14-16, the Radio JOVE project exhibited at the annual Hamvention in Dayton, OH. One of the biggest gatherings of radio amateurs in the world, this event draws thousands of visitors each year.

Radio JOVE shared an exhibit booth with the Society of Amateur Radio Astronomers (SARA) and the Interactive NASA Space Physics Ionosphere Radio Experiments (INSPIRE) project.

[ 14 Apr 2009 ]
Jupiter Season is now in Full Swing!

Wes Greenman chart of Apr 11th Io-B stormWe hope you can join us and observe Jupiter for this season -- the season runs until November 2009. We would like to note that we have even had success observing Jupiter well after sunrise; the reason is that the Sun is so quiet right now. We will have coordinated observing sessions in the future to help you with you observations. Stay tuned for these announcements.

[ 3 Mar 2009 ]
February 10th Solar Burst Caught by RJers

Chart of Feb 10th BurstA strong type III solar burst was observed by a number of Radio JOVE observers on February 10, 2009 at 18:02Z.

No sunspots were visible on the Sun on that date, but the burst was quite strong at 20 MHz.

[ 3 Mar 2009 ]
Radio JOVE to Participate in the 100 Hours of Astronomy Event

One of the coming events for the International Year of Astronomy is the "100 Hours of Astronomy" scheduled for April 2-5, 2009. (See . One of the key goals of 100 Hours of Astronomy is to have as many people as possible look through a telescope as Galileo did for the first time 400 years ago. Many star parties and other celebratory events around the world will happen during the 100 Hours.

Radio JOVE would like to participate by having as many radio telescopes as possible running continuously for the 100 hours, sending out their signals on the web for most or all of that time. Even if you can't run your equipment continuously, having it running as much as possible would be wonderful. Another possibility would be to take Radio JOVE equipment to a local star party, set it up, and show others that optical astronomy is not the only way to learn about the universe.

[20 June 2008]
Radio Jove at the Planetary Radio Emissions Discovery Site for Heritage Days

Photo from RJ 2007 Heritage Days boothMembers of Radio Jove will be participating in the Montgomery County, Maryland Heritage Days on Saturday, June 28th from noon to 4pm. They will have an RJ receiver system near the site of the discovery of radio emissions from Jupiter. During this public event they will be talking about the history of the discovery, monitoring the Sun for solar bursts and handing out NASA educational materials.

[ 13 May 2008 ]
Radio JOVE Mourns Passing of Dr. Ron Parise

Photo of Astronaut Ron PariseDr. Ronald A. Parise, one of the original Radio JOVE Project team members and a long-time friend and colleague of many of those on the Project, lost his battle with cancer on May 9, 2008. Ron helped guide Radio JOVE in its early years and developed the first dedicated software for it. Many will remember Ron for his role as payload specialist on Space Shuttle missions STS-35 and STS-67 where he conducted important ultraviolet astronomical observations with the ASTRO-1 and ASTRO-2 payloads.

Our hearts are heavy with this sad news here at Radio JOVE.

[ 2 Apr 2008 ]
Solar Cycle 24 has Begun

Prediction overlay of sunspot cycle 24Solar cycle 24 has been recognized as having begun in early 2008. New solar cycles always begin with a high-latitude, reversed polarity sunspot. The region of magnetism that appeared back in December 2007 achieved high latitude (24 degrees North) and was magnetically reversed, but no supporting sunspot appeared until 25 days later.

We can expect the level of solar activity to increase over the next 4-5 years. (See Observing the Sun.)

[ 6 Nov. 2007 ]
1000th Radio JOVE Kit Celebrated

Recipient with 1000th kitOn July 19, 2007 Radio JOVE celebrated the delivery of the 1000th RJ 1.1 Radio Telescope Kit. Mike Youngdeer, a high school student from Cherokee, NC in the Pisgah Astronomical Research Institute's (PARI) 2007 Space Science Lab program was the kit's recipient.

RJ Project Team Members Dr. Jim Thieman and Dr. Chuck Higgins were on hand and presented Mike with the book "Listening to Jupiter", software, and NASA posters and pins.

[ 11 Jul. 2007 ]
Radio JOVE Exhibit at Montgomery County, Maryland Heritage Days
Thumbnail of RJ exhibit On Saturday, June 23, Radio JOVE team members set up at the Jupiter radio emission discovery site near Seneca, Maryland, highlighting this historical event to visitors taking part in Montgomery County's Heritage Days celebration.
[ 11 Jul. 2007 ]
Dr. Kenneth L. Franklin, Co-Discoverer of Jupiter's Radio Emissions, 1923-2007
Thumbnail of Portrait of K. Franklin The Radio JOVE Project mourns the passing of Ken Franklin, astronomer, writer, educator, and co-discoverer of Jupiter's radio emissions. Dr. Franklin passed away on June 18, 2007.
[ 11 May 2006 ]
Student's Radio JOVE Intel Science Fair project wins special award
Hieu Huu Tran, age 16, from Southside High School in Greenville, South Carolina, USA, won the Richard D. Lines Special Award in Astronomy at the 2006 Intel International Science and Engineering Fair held in Indianapolis, Indiana. Tran's project was entitled "Radio Interferometry Using 2 NASA RadioJOVEs at 20.1 MHz with Software Implementation in Java".

The Lines Award is presented to a student whose project "best reflects the mission of the International Amateur-Professional Photoelectric Photometry (collaboration between amateurs, students and/or professionals) as well as in observational and/or instrumental astronomy." This award includes a $5000 scholarship for the student and $1000 for Tran's high school's science department.

The Radio JOVE Project Team adds its congratulations, and a hearty well done!
[ 1 Nov. 2005 ]
The Solar System Radio Explorer Kiosk (SSREK) will teach visitors about radio waves from Jupiter and the Sun and what they may be telling us about these worlds.
NASA Logo -