Juno Captured This Image of Earth on its Way Out to Jupiter Back in 2013

By Nancy Atkinson - June 21, 2021 at 2:07 PM UTC | Missions
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Since the Juno spacecraft has been in orbit around Jupiter for nearly five years -- since July 4, 2016 -- you may have forgotten about that time back in 2013 Juno flew past Earth. The spacecraft needed a little extra boost to reach Jupiter, so it used Earth for a gravity assist. Image editor Kevin Gill reminded us of that flyby with some stunning newly processed images of Earth, taken by the JunoCam, the "citizen science" camera on board. Pale blue dot indeed!

Juno flew past Earth on Oct. 9, 2013, and it received a boost in speed of more than 3.9 kilometers per second (about 8,800 mph.) Scientists also used the flyby as a way to test out the camera, giving it its first warmup in space of taking images of a colorful planet.

The flyby also gave amateur image editors a warmup in using Junocam images. Since JunoCam was designed to be a collaborative effort between the mission scientists and the public, JunoCam's imagery is sent back to Earth and posted to the Mission Juno website, where the general public may download them for subsequent image processing. The images processed by citizen scientists are then posted on the Juno website. They range from detailed scientific imagery and analyses to beautiful works of space-themed art.

"The idea that you can couple our scientific imaging and understanding of the planet, with artistic representations of not only what the planet means but what exploration means, has been very valuable to the mission– and to the public," said Paul Steffes from Georgie Tech, one of the Juno science investigators.

Juno launched from Kennedy Space Center in Florida on August 5, 2011. Juno's launch vehicle was capable of giving the spacecraft only enough energy to reach the asteroid belt, at which point the Sun's gravity pulled it back toward the inner solar system. Mission planners designed the swing by Earth as a gravity assist to increase the spacecraft's speed relative to the sun, so that it could reach Jupiter.

You can see all the JunoCam citizen science images here, and see more of Kevin’s great work at his Flickr page.

Nancy Atkinson

Nancy Atkinson

Nancy Atkinson is a space journalist and author with a passion for telling the stories of people involved in space exploration and astronomy. She is currently retired from daily writing, but worked at Universe Today for 20 years as a writer and editor. She also contributed articles to The Planetary Society, Ad Astra (National Space Society), New Scientist and many other online outlets.

Her 2019 book, "Eight Years to the Moon: The History of the Apollo Missions,” shares the untold stories of engineers and scientists who worked behind the scenes to make the Apollo program so successful, despite the daunting odds against it. Her first book “Incredible Stories From Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos” (2016) tells the stories of 37 scientists and engineers that work on several current NASA robotic missions to explore the solar system and beyond.

Nancy is also a NASA/JPL Solar System Ambassador, and through this program, she has the opportunity to share her passion of space and astronomy with children and adults through presentations and programs. Nancy's personal website is nancyatkinson.com