A Year On The Sun Through Our Satellite’s Eyes

Solar System: Things to Know This Week

Jupiter, we've got quite the photoshoot planned for you. Today, our Juno spacecraft is flying directly over the Great Red Spot, kicking off the first-ever close-up study of this iconic storm and passing by at an altitude of only 5,600 miles (9,000 kilometers). In honor of this historic event, below are 10 things to know about the planet's most famous feature.

1. A Storm That Puts Others to Shame

The Great Red Spot is a gigantic, high-pressure, ancient storm at Jupiter's southern hemisphere that's one of the longest lasting in the solar system. It's so large, about 1.3 Earths could fit inside of it. And you can bet you'll get swept away—the storm's tumultuous winds peak at about 400 mph.

2. How Old Is It? 

The Great Red Spot has been swirling wildly over Jupiter's skies for the past 150 years—maybe even much longer. While people saw a big spot on Jupiter when they started stargazing through telescopes in the 1600s, it's still unclear whether they were looking at a different storm. Today, scientists know the Great Red Spot has been there for a while, but they still struggle to learn what causes its swirl of reddish hues.

3. Time for That Close-Up 

Juno will fly over the Great Red Spot about 12 minutes after the spacecraft makes the closest approach to Jupiter of its current orbit at 6:55 p.m. on July 10, PDT (9:55 p.m. on July 10, EDT; 1:55 a.m. on July 11, Universal Time). Juno entered orbit around Jupiter on July 4, 2016.

4. Oh, So Mysterious 

Understanding the Great Red Spot is not easy, and it's mostly Jupiter's fault. The planet a thousand times as big as Earth and consists mostly of gas. A liquid ocean of hydrogen surrounds its core, and the atmosphere consists mostly of hydrogen and helium. That translates into no solid ground (like we have on Earth) to weaken storms. Also, Jupiter's clouds make it hard to gather clear observations of its lower atmosphere. 

This false-color image of Jupiter was taken on May 18, 2017, with a mid-infrared filter centered at a wavelength of 8.8 microns, at the Subaru Telescope in Hawaii, in collaboration with observations of Jupiter by NASA's Juno mission. Credit: NAOJ/NASA/JPL-Caltech

5. Help From Hawaii 

To assist Juno's investigation of the giant planet's atmosphere, Earth-based telescopes lent their helpful eyes. On May 18, 2017, the Gemini North telescope and the Subaru Telescope—both located on Hawaii's Mauna Kea peak—simultaneously examined Jupiter in very high resolutions at different wavelengths. These latest observations helped provide information about the Great Red Spot's atmospheric dynamics at different depths and at other regions of Jupiter.

6. Curious Observations 

Observations from Subaru showed the Great Red Spot "had a cold and cloudy interior increasing toward its center, with a periphery that was warmer and clearer," said Juno science team member Glenn Orton of our Jet Propulsion Laboratory, Pasadena, California. "A region to its northwest was unusually turbulent and chaotic, with bands that were cold and cloudy, alternating with bands that were warm and clear."

This composite, false-color infrared image of Jupiter reveals haze particles over a range of altitudes, as seen in reflected sunlight. It was taken using the Gemini North telescope in Hawaii on May 18, 2017, in collaboration with observations of Jupiter by our Juno mission. Credits: Gemini Observatory/AURA/NSF/NASA/JPL-Caltech

7. Hot in Here 

Scientists were stumped by a particular question: Why were the temperatures in Jupiter's upper atmosphere comparable to those found at Earth, even though Jupiter is more than five times the distance from the sun? If the sun isn't the heat source, then what is? Turns out, the storm in the Great Red Spot produces two kinds of turbulent energy waves that collide and heat the upper atmosphere. Gravity waves are much like how a guitar string moves when plucked, while acoustic waves are compressions of the air (sound waves). Heating in the upper atmosphere 500 miles (800 kilometers) above the Great Red Spot is thought to be caused by a combination of these two wave types "crashing," like ocean waves on a beach.

8. Color Theory 

Scientists don't know exactly how the Great Red Spot's rich colors formed. Studies predict Jupiter's upper atmosphere has clouds consisting of ammonia, ammonium hydrosulfide, and water, but it's still unclear how or even whether these chemicals react. "We're talking about something that only makes up a really tiny portion of the atmosphere," said Amy Simon, an expert in planetary atmospheres at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "That's what makes it so hard to figure out exactly what makes the colors that we see." Over at NASA's Jet Propulsion Laboratory in Pasadena, California, researchers concluded that the ruddy color is likely a product of simple chemicals being broken apart by sunlight in the planet's upper atmosphere. "Our models suggest most of the Great Red Spot is actually pretty bland in color, beneath the upper cloud layer of reddish material," said Kevin Baines, a Cassini scientist at JPL.

9. Been There, Haven't Seen That 

In January and February 1979, NASA's Voyager 1 spacecraft zoomed toward Jupiter, capturing images of the Great Red Spot during its approach. Still, we've never been as close as we're about to get during Juno's flyover on July 10.

10. Simply Beautiful 

This image of a crescent Jupiter and the iconic Great Red Spot was created by a citizen scientist, Roman Tkachenko, using data from Juno's JunoCam instrument. JunoCam's raw images are available here for the public to peruse and enhance.Want to learn more? Read our full list of the 10 things to know this week about the solar system HERE.

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Say hello to globular cluster 47 Tucanae 👋

This glittery spray of ancient stars is about 16,700 light-years away from Earth toward the constellation Tucana. Globular clusters like this one are isolated star cities, home to hundreds of thousands of stars that are held together by their mutual gravity. And like the fast pace of cities, there's plenty of action in these stellar metropolises. The stars are in constant motion, orbiting around the cluster's center.

Past observations have shown that the heavyweight stars tend to crowd into the “downtown” core area, while lightweight stars reside in the less populated suburbs. But as heavyweight stars age, they rapidly lose mass, cool down and shut off their nuclear furnaces. After the purge, only the stars' bright, superhot cores – called white dwarfs – remain. This weight loss program causes the now lighter-weight white dwarfs to be nudged out of the downtown area through gravitational interactions with heftier stars.

Until these Hubble observations, astronomers had never seen the dynamic conveyor belt in action. The Hubble results reveal young white dwarfs amid their leisurely 40-million-year exodus from the bustling center of the cluster.

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Exploring Our National Parks…from Space!

The United States has nearly 84 million acres of historic and scenic land in its national parks system. In celebration of National Park Week, here are some satellite views of a few of those national treasures.

Throughout National Park Week, you can #FindYourPark and visit for free.

Yosemite National Park – California

Naked summits alternate with forested lowlands in Yosemite Valley, part of California’s Yosemite National Park. Our Landsat 7 satellite captured this true-color image of part of the Yosemite Valley on Aug. 8, 2001.

Yellowstone National Park – Wyoming, Idaho and Montana

Established in 1872, it was the first national park in the United States, and the world! Its geological and biological wonders have led international groups to declare it a world heritage site and a biosphere reserve. Yellowstone National Park captures the spirit and purpose of the National Park Service, blending modern and ancient human history with nature in its raw complexity.

Hot Springs National Park – Arkansas

National Parks usually make us think of pristine landscapes untouched by human civilization. Most of the 59 national parks in the United States fit that mold, but there are a few exceptions. Arkansas’s Hot Springs National Park, the country’s smallest and most urban, is one of them. Hot Springs, a city of 96,000 people, lies at the southern edge of the park and partly within its boarders.

Shenandoah National Park – Virginia

This long, narrow park in the Blue Ridge Mountains spans more than 179,000 acres, with 40% of the land protected as wilderness. More than 95% of the park is forested, sheltering 1,300 plant species and 267 types of trees and shrubs. The park contains 577 archeological sites, more than 100 cemeteries, and some rocks that date back a billion years.

Olympic National Park – Washington

Possibly one of America’s most diverse national landscapes, Olympic National Park is situated on the Olympic Peninsula in northwestern Washington. If you walked from west to east across the park, you would start at the rocky Pacific shoreline, move into rare temperate rainforests and lush river valleys, ascend glaciers and rugged mountain peaks, and then descend into a comparatively dry rain shadow and alpine forest. From beach to the top of Mount Olympus, you would rise 7,980 feet above sea level.

Colorado National Monument – Colorado

Along the Interstate 70 corridor in western Colorado, well-watered croplands, residential properties and urbanized areas create a broad stripe of green and gray. Away from the interstate, dry climate conditions color the landscape shades of beige, brick and tan. Yet these arid regions offer treasures of their own, including stunning vistas and wildlife both living and extinct. The varied landscapes of this park show the effects of tens of millions of years of erosion.

The images above were produced by our Earth Observatory as part of its 2016 series featuring the National Park Service properties. Check out more HERE. 

Want to see more of our nation’s parks from space? Visit our Flickr gallery HERE.

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Do you listen to music in space? If so, what are you jamming to?

Twinkle, twinkle, little star, How I wonder what you are. Up above the world so high, Like a diamond in the sky. 🌟 The final stages of a star’s life allow us a glimpse into the future of our own solar system. This image from our Hubble Space Telescope shows what’s left of a star 10,000 light-years from Earth.

A star like our Sun will, at the end of its life, transform into a red giant. The core of the star will eventually collapse in on itself, ejecting the surface layers outward. After that, all that remains of the star is what we see here: glowing outer layers surrounding a white dwarf star. In just a few thousand years they will have dissipated, and all that will be left to see is the dimly glowing white dwarf. More on this image, here. 

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From Racing Suits to Robotic Gloves: How to Gear Up with NASA Technology

Did you know you are surrounded by NASA technology? From your apartment building to the doctor’s office, and even in your cellphone camera, there is more space in your life than you think!

In the latest edition of Spinoff, we are introducing dozens of new ways NASA technology could cross your path. Whether you need an extra “hand” on the production line or a weatherproof jacket, check out how to gear up with technology made for space.

Grip-Strengthening Glove

Robots are crucial to exploring space and other planets – they could even support astronauts and form the advance party for places humans have yet to reach. But the human machine is hard to replicate.

A collaboration with General Motors helped us build Robonaut 2 – and the design for this robot’s hands has been adapted into a robotic glove that helps manufacturing employees, such as automobile workers, reduce injuries and improve quality control.

The Swedish company Bioservo used the Robo-Glove technology to create the world’s first industrial-strength robotic glove for factory workers who perform repetitive manual tasks.

The Ironhand glove adds force to the user’s grip with artificial tendons and pressure sensors on the palm and the fingers.

The result? Reduced strain on the user’s own tendons and muscles, meaning fewer workplace stress injuries and better comfort for workers.

Temperature-Control Fabrics

Spacesuits need major insulation and temperature control to protect astronauts on extravehicular activities, aka spacewalks. To help solve this, we created a phase-change material with help from the Triangle Research and Development Corporation.

With funding from a NASA Small Business Innovation Research contract, Triangle incorporated the material into a fabric glove insert that could maintain a steady temperature by absorbing and releasing heat, ensuring it feels just right.

While the invention never made it to orbit, it did make it into the driver’s seat.

Outlast Technologies exclusively licensed the material from Triangle and has incorporated it into outdoor gear, bedding, and now – auto racing suits with help from Cambridge, England-based Walero.

Due to extreme temperatures in the cockpit, drivers in almost every major racing championship wear Walero for its cooling properties. Cristiana Oprea (pictured) wears it while driving for the European Rally Championship. Credit: Walero

The race undergarments, bonded with fire-retardant material for added protection, help drivers maintain a lower core temperature and heart rate, which means fewer mistakes and better lap times.

The suits have been sold to both amateur racers and professional NASCAR drivers.

Lightweight Rain Jackets

The superinsulating material that makes up space blankets is one of our most ubiquitous spinoffs. Found everywhere from inside the walls and roofs of buildings to cryogenic tanks and MRI machines, radiant barrier technology was first created to insulate spacesuits and spacecraft. And now this NASA spinoff can be found in weatherproof jackets as well.

Inspired by her passion to run following a series of surgeries to help correct a life-threatening injury, Hema Nambiar launched her Larchmont, New York, start-up company 13-One. To create her jacket, she worked with Advanced Flexible Materials Inc.’s brand Heatsheets. The brand was already marketing products like the space blankets traditionally distributed after races to prevent dangerous drops in temperature.

The 13-One jackets are designed to be warm and weatherproof, but their thin, reflective lining lets them also be lightweight and easily portable. Credit: Lourenso Ramautar, Out of New York Studio

The resulting line of jackets has a black exterior and a lining to reflect body heat. They weigh less than a pound, are wind- and water-resistant, and easily pack into a small, built-in pouch.

Want to check out more NASA spinoffs? Be sure to find us on spinoff.nasa.gov and on Twitter.

Interested in licensing your own NASA technologies? Check out the NASA Technology Transfer program at technology.nasa.gov.

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Hello there 👋

Welcome back to Mindful Mondays! 🧘

Mondays are, famously, most people’s seventh favorite day of the week. And Mondays where everything is darker, longer, and colder than normal? Thanks, but no thanks.

But don’t panic; we’ve got something to help. It might be small, but it can make a big difference. Just ten minutes of mindfulness can go a long way, and taking some time out to sit down, slow down, and breathe can help center your thoughts and balance your mood. Sometimes, the best things in life really are free.

This year, we have teamed up with the good folks at @nasa. They want you to tune in and space out to relaxing music and ultra-high-definition visuals of the cosmos—from the surface of Mars.  

Sounds good, right? Well, it gets better. Watch more Space Out episodes on NASA+, a new no-cost, ad-free streaming service.

Why not give it a try? Just a few minutes this Monday morning can make all the difference, and we are bringing mindfulness straight to you. 

🧘WATCH: Space Out with NASA: Martian Landscapes, 11/27 at 1pm EST🧘

YouTube

Space Out with NASA: Martian Landscapes

Explore the surface of Mars as you turn on, tune in, and space out to relaxing music and stunning ultra-high-definition visuals of our cosmi

The Big Build: Artemis I Stacks Up

Our Space Launch System (SLS) rocket is coming together at the agency’s Kennedy Space Center in Florida this summer. Our mighty SLS rocket is set to power the Artemis I mission to send our Orion spacecraft around the Moon. But, before it heads to the Moon, NASA puts it together right here on Earth.

Read on for more on how our Moon rocket for Artemis I will come together this summer:

Get the Base

How do crews assemble a rocket and spacecraft as tall as a skyscraper? The process all starts inside the iconic Vehicle Assembly Building at Kennedy with the mobile launcher. Recognized as a Florida Space Coast landmark, the Vehicle Assembly Building, or VAB, houses special cranes, lifts, and equipment to move and connect the spaceflight hardware together. Orion and all five of the major parts of the Artemis I rocket are already at Kennedy in preparation for launch. Inside the VAB, teams carefully stack and connect the elements to the mobile launcher, which serves as a platform for assembly and, later, for fueling and launching the rocket.

Start with the boosters

Because they carry the entire weight of the rocket and spacecraft, the twin solid rocket boosters for our SLS rocket are the first elements to be stacked on the mobile launcher inside the VAB. Crews with NASA’s Exploration Ground Systems and contractor Jacobs team completed stacking the boosters in March. Each taller than the Statue of Liberty and adorned with the iconic NASA “worm” logo, the five-segment boosters flank either side of the rocket’s core stage and upper stage. At launch, each booster produces more than 3.6 million pounds of thrust in just two minutes to quickly lift the rocket and spacecraft off the pad and to space.

Bring in the core stage

In between the twin solid rocket boosters is the core stage. The stage has two huge liquid propellant tanks, computers that control the rocket’s flight, and four RS-25 engines. Weighing more than 188,000 pounds without fuel and standing 212 feet, the core stage is the largest element of the SLS rocket. To place the core stage in between the two boosters, teams will use a heavy-lift crane to raise and lower the stage into place on the mobile launcher.

On launch day, the core stage’s RS-25 engines produce more than 2 million pounds of thrust and ignite just before the boosters. Together, the boosters and engines produce 8.8 million pounds of thrust to send the SLS and Orion into orbit.

Add the Launch Vehicle Stage Adapter

Once the boosters and core stage are secured, teams add the launch vehicle stage adapter, or LVSA, to the stack. The LVSA is a cone-shaped element that connects the rocket’s core stage and Interim Cryogenic Propulsion Stage (ICPS), or upper stage. The roughly 30-foot LVSA houses and protects the RL10 engine that powers the ICPS. Once teams bolt the LVSA into place on top of the rocket, the diameter of SLS will officially change from a wide base to a more narrow point — much like a change in the shape of a pencil from eraser to point.

Lower the Interim Cryogenic Propulsion Stage into place

Next in the stacking line-up is the Interim Cryogenic Propulsion Stage or ICPS. Like the LVSA, crews will lift and bolt the ICPS into place. To help power our deep space missions and goals, our SLS rocket delivers propulsion in phases. At liftoff, the core stage and solid rocket boosters will propel Artemis I off the launch pad. Once in orbit, the ICPS and its single RL10 engine will provide nearly 25,000 pounds of thrust to send our Orion spacecraft on a precise trajectory to the Moon.

Nearly there with the Orion stage adapter

When the Orion stage adapter crowns the top of the ICPS, you’ll know we’re nearly complete with stacking SLS rocket for Artemis I. The Orion Stage Adapter is more than just a connection point. At five feet in height, the Orion stage adapter may be small, but it holds and carries several small satellites called CubeSats. After Orion separates from the SLS rocket and heads to the Moon, these shoebox-sized payloads are released into space for their own missions to conduct science and technology research vital to deep space exploration. Compared to the rest of the rocket and spacecraft, the Orion stage adapter is the smallest SLS component that’s stacked for Artemis I.

Top it off

Finally, our Orion spacecraft will be placed on top of our Moon rocket inside the VAB. The final piece will be easy to spot as teams recently added the bright red NASA “worm” logotype to the outside of the spacecraft. The Orion spacecraft is much more than just a capsule built to carry crew. It has a launch abort system, which will carry the crew to safety in case of an emergency, and a service module developed by the European Space Agency that will power and propel the spacecraft during its three-week mission. On the uncrewed Artemis I mission, Orion will check out the spacecraft’s critical systems, including navigation, communications systems, and the heat shield needed to support astronauts who will fly on Artemis II and beyond.

Ready for launch!

The path to the pad requires many steps and check lists. Before Artemis I rolls to the launch pad, teams will finalize outfitting and other important assembly work inside the VAB. Once assembled, the integrated SLS rocket and Orion will undergo several final tests and checkouts in the VAB and on the launch pad before it’s readied for launch.

The Artemis I mission is the first in a series of increasingly complex missions that will pave the way for landing the first woman and the first person of color on the Moon. The Space Launch System is the only rocket that can send NASA astronauts aboard NASA’s Orion spacecraft and supplies to the Moon in a single mission.

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Water, Water Everywhere; We Track Drops to Drink!

When we think about what makes a planet habitable, we’re often talking about water. With abundant water in liquid, gas (vapor) and solid (ice) form, Earth is a highly unusual planet. Almost 70% of our home planet’s surface is covered in water!

But about 97% of Earth’s water is salty – only a tiny amount is freshwater: the stuff humans, pets and plants need to survive.

Water on our planet is constantly moving, and not just geographically. Water shifts phases from ice to water to vapor and back, moving through the planet’s soils and skies as it goes.

That’s where our satellites come in.

Look at the Midwestern U.S. this spring, for example. Torrential rain oversaturated the soil and overflowed rivers, which caused severe flooding, seen by Landsat.

Our satellites also tracked a years-long drought in California. Between 2013 and 2014, much of the state turned brown, without visible green.  

It’s not just rain. Where and when snow falls – and melts – is changing, too. The snow that falls and accumulates on the ground is called snowpack, which eventually melts and feeds rivers used for drinking water and crop irrigation. When the snow doesn’t fall, or melts too early, communities go without water and crops don’t get watered at the right time.

Even when water is available, it can become contaminated by blooms of phytoplankton, like cyanobacteria . Also known as blue-green algae, these organisms can make humans sick if they drink the water. Satellites can help track algae from space, looking for the brightly colored blooms against blue water.

Zooming even farther back, Earth’s blue water is visible from thousands of miles away. The water around us makes our planet habitable and makes our planet shine blue among the darkness of space.

Knowing where the water is, and where it’s going, helps people make better decisions about how to manage it. Earth’s climate is changing rapidly, and freshwater is moving as a result. Some places are getting drier and some are getting much, much wetter. By predicting droughts and floods and tracking blooms of algae, our view of freshwater around the globe helps people manage their water.

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Sharpening Our View of Climate Change with the Plankton, Aerosol, Cloud, ocean Ecosystem Satellite

As our planet warms, Earth’s ocean and atmosphere are changing.

Climate change has a lot of impact on the ocean, from sea level rise to marine heat waves to a loss of biodiversity. Meanwhile, greenhouse gases like carbon dioxide continue to warm our atmosphere.

NASA’s upcoming satellite, PACE, is soon to be on the case!

Set to launch on Feb. 6, 2024, the Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) mission will help us better understand the complex systems driving the global changes that come with a warming climate.

Earth’s ocean is becoming greener due to climate change. PACE will see the ocean in more hues than ever before.

While a single phytoplankton typically can’t be seen with the naked eye, communities of trillions of phytoplankton, called blooms, can be seen from space. Blooms often take on a greenish tinge due to the pigments that phytoplankton (similar to plants on land) use to make energy through photosynthesis.

In a 2023 study, scientists found that portions of the ocean had turned greener because there were more chlorophyll-carrying phytoplankton. PACE has a hyperspectral sensor, the Ocean Color Instrument (OCI), that will be able to discern subtle shifts in hue. This will allow scientists to monitor changes in phytoplankton communities and ocean health overall due to climate change.

Phytoplankton play a key role in helping the ocean absorb carbon from the atmosphere. PACE will identify different phytoplankton species from space.

With PACE, scientists will be able to tell what phytoplankton communities are present – from space! Before, this could only be done by analyzing a sample of seawater.

Telling “who’s who” in a phytoplankton bloom is key because different phytoplankton play vastly different roles in aquatic ecosystems. They can fuel the food chain and draw down carbon dioxide from the atmosphere to photosynthesize. Some phytoplankton populations capture carbon as they die and sink to the deep ocean; others release the gas back into the atmosphere as they decay near the surface.

Studying these teeny tiny critters from space will help scientists learn how and where phytoplankton are affected by climate change, and how changes in these communities may affect other creatures and ocean ecosystems.

Climate models are one of our most powerful tools to understand how Earth is changing. PACE data will improve the data these models rely on.

The PACE mission will offer important insights on airborne particles of sea salt, smoke, human-made pollutants, and dust – collectively called aerosols – by observing how they interact with light.

With two instruments called polarimeters, SPEXone and HARP2, PACE will allow scientists to measure the size, composition, and abundance of these microscopic particles in our atmosphere. This information is crucial to figuring out how climate and air quality are changing.

PACE data will help scientists answer key climate questions, like how aerosols affect cloud formation or how ice clouds and liquid clouds differ.

It will also enable scientists to examine one of the trickiest components of climate change to model: how clouds and aerosols interact. Once PACE is operational, scientists can replace the estimates currently used to fill data gaps in climate models with measurements from the new satellite.

With a view of the whole planet every two days, PACE will track both microscopic organisms in the ocean and microscopic particles in the atmosphere. PACE’s unique view will help us learn more about the ways climate change is impacting our planet’s ocean and atmosphere.

Stay up to date on the NASA PACE blog, and make sure to follow us on Tumblr for your regular dose of sPACE!