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"Bruised" Jupiter as Seen on Last Day of Comet Impacts
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By USH
Io, Jupiter’s famous volcanic moon, is already the most volcanically active place in the solar system. But between Halloween and Christmas of 2024, something happened that was extreme, even by Io’s standards.
Its south pole erupted in a way astronomers weren’t even sure was possible. A super volcano exploded with such force that it was visible from space as a massive dark blotch in the atmosphere. In infrared, the eruption was so intense that it saturated scientific sensors.
How Big Was This Eruption? To grasp the scale, imagine Io were the size of Earth. This super volcano would cover an area larger than Texas, larger than Egypt. The aftermath would trigger a global volcanic winter lasting years, possibly decades.
The eruption unleashed energy equivalent to 260 Yellowstone's and its lava field could bury everything from New York to Kansas under 10 feet of molten rock or stretch from the Gulf of Mexico to the Great Lakes. Every minute, the eruption released energy equal to 1.5 million Hiroshima bombs.
Just think about this: Earth’s most devastating volcanic event, the Siberian Traps eruption, lasted for a million years and led to one of the worst mass extinctions in history. Io’s super volcano, at its current rate, would surpass that in just 800 years. Over a million years, it could spew out the equivalent of 1% of Earth’s entire mantle. If the volume of this eruption were spread evenly across Earth, our planet’s landscape would be completely transformed in a matter of days.
Even in a solar system filled with astonishing phenomena, Io continues to shock and surprise us.
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By NASA
LOCATION: Texas State Capitol – Austin, Texas SUBJECT: Space Day activities at the Texas State Capitol in Austin, Texas PHOTOGRAPHER: Lauren HarnettNASA March 17, 2025
NASA is heading back to the state capitol in March for Space Day Texas, a recognition of achievements throughout Texas and a look ahead to the impact future human space exploration has on the Lone Star state.
The two-day schedule of events and exhibits focusing on exploration, astronauts, and science, technology, engineering, and math education will include astronaut visits, interactive exhibits, and legislative proclamations.
NASA’s Johnson Space Center in Houston will share its accomplishments on the Capitol grounds from 9 a.m. to 4 p.m. CDT Tuesday, March 25, joining academic and commercial partners from across the state to share Texas’ blueprint for expanding humanity’s frontier in space.
On Monday, March 24, exhibits will feature the Texas High School Aerospace Scholars program at the University of Texas Elementary Charter school, along with NASA Johnson’s Office of STEM Engagement, Orion program, and Lockheed Martin. Interactive events will feature NASA STEM engagement programs and hands-on exhibits.
At 10 a.m. Tuesday, March 25, proclamations celebrating NASA’s 25th anniversary of continuous human presence on the International Space Station, the High School Aerospace Scholars program, and the continued progression of the Artemis campaign through NASA’s commercialization of cargo, crew, landers, spacesuits, and rovers will be read in the Texas House and Senate chambers, respectively. Following the proclamations, an Artemis II crew astronaut will participate in a live question and answer session on the front steps of the Capitol.
NASA’s impact in Texas is strong. NASA Johnson has served as the iconic site for some of the greatest moments in American history, from landing humans on the Moon to assembling the International Space Station.
For more than 60 years, NASA has led the world in human space exploration. Today, it is testing technologies on the Space Station that will help humanity push forward to the Moon and Mars. NASA’s workforce in Texas includes more than 10,000 aerospace employees and more than $2 billion in contracts and federal salaries in 2024.
Learn more about NASA Johnson and its impact in Texas at:
https://www.nasa.gov/johnson
-end-
Kelly Humphries
Johnson Space Center, Houston
281-483-5111
kelly.o.humphries@nasa.gov
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By NASA
Explore This Section Webb News Latest News Latest Images Blog (offsite) Awards X (offsite – login reqd) Instagram (offsite – login reqd) Facebook (offsite- login reqd) Youtube (offsite) Overview About Who is James Webb? Fact Sheet Impacts+Benefits FAQ Science Overview and Goals Early Universe Galaxies Over Time Star Lifecycle Other Worlds Observatory Overview Launch Orbit Mirrors Sunshield Instrument: NIRCam Instrument: MIRI Instrument: NIRSpec Instrument: FGS/NIRISS Optical Telescope Element Backplane Spacecraft Bus Instrument Module Multimedia About Webb Images Images Videos What is Webb Observing? 3d Webb in 3d Solar System Podcasts Webb Image Sonifications Team International Team People Of Webb More For the Media For Scientists For Educators For Fun/Learning 6 Min Read NASA’s Webb Exposes Complex Atmosphere of Starless Super-Jupiter
This artist’s concept shows what the isolated planetary-mass object SIMP 0136 could look like based on recent observations from NASA’s James Webb Space Telescope and previous observations from Hubble, Spitzer, and numerous ground-based telescopes. Credits:
NASA, ESA, CSA, and Joseph Olmsted (STScI) An international team of researchers has discovered that previously observed variations in brightness of a free-floating planetary-mass object known as SIMP 0136 must be the result of a complex combination of atmospheric factors, and cannot be explained by clouds alone.
Using NASA’s James Webb Space Telescope to monitor a broad spectrum of infrared light emitted over two full rotation periods by SIMP 0136, the team was able to detect variations in cloud layers, temperature, and carbon chemistry that were previously hidden from view.
The results provide crucial insight into the three-dimensional complexity of gas giant atmospheres within and beyond our solar system. Detailed characterization of objects like these is essential preparation for direct imaging of exoplanets, planets outside our solar system, with NASA’s Nancy Grace Roman Space Telescope, which is scheduled to begin operations in 2027.
Rapidly Rotating, Free-Floating
SIMP 0136 is a rapidly rotating, free-floating object roughly 13 times the mass of Jupiter, located in the Milky Way just 20 light-years from Earth. Although it is not classified as a gas giant exoplanet — it doesn’t orbit a star and may instead be a brown dwarf — SIMP 0136 is an ideal target for exo-meteorology: It is the brightest object of its kind in the northern sky. Because it is isolated, it can be observed with no fear of light contamination or variability caused by a host star. And its short rotation period of just 2.4 hours makes it possible to survey very efficiently.
Prior to the Webb observations, SIMP 0136 had been studied extensively using ground-based observatories and NASA’s Hubble and Spitzer space telescopes.
“We already knew that it varies in brightness, and we were confident that there are patchy cloud layers that rotate in and out of view and evolve over time,” explained Allison McCarthy, doctoral student at Boston University and lead author on a study published today in The Astrophysical Journal Letters. “We also thought there could be temperature variations, chemical reactions, and possibly some effects of auroral activity affecting the brightness, but we weren’t sure.”
To figure it out, the team needed Webb’s ability to measure very precise changes in brightness over a broad range of wavelengths.
Graphic A: Isolated Planetary-Mass Object SIMP 0136 (Artist’s Concept)
This artist’s concept shows what the isolated planetary-mass object SIMP 0136 could look like based on recent observations from NASA’s James Webb Space Telescope and previous observations from Hubble, Spitzer, and numerous ground-based telescopes. Researchers used Webb’s NIRSpec (Near-Infrared Spectrograph) and MIRI (Mid-Infrared Instrument) to measure subtle changes in the brightness of infrared light as the object completed two 2.4-hour rotations. By analyzing the change in brightness of different wavelengths over time, they were able to detect variability in cloud cover at different depths, temperature variations in the upper atmosphere, and changes in carbon chemistry as different sides of the object rotated in and out of view. This illustration is based on Webb’s spectroscopic observations. Webb has not captured a direct image of the object. NASA, ESA, CSA, and Joseph Olmsted (STScI) Charting Thousands of Infrared Rainbows
Using NIRSpec (Near-Infrared Spectrograph), Webb captured thousands of individual 0.6- to 5.3-micron spectra — one every 1.8 seconds over more than three hours as the object completed one full rotation. This was immediately followed by an observation with MIRI (Mid-Infrared Instrument), which collected hundreds of spectroscopic measurements of 5- to 14-micron light — one every 19.2 seconds, over another rotation.
The result was hundreds of detailed light curves, each showing the change in brightness of a very precise wavelength (color) as different sides of the object rotated into view.
“To see the full spectrum of this object change over the course of minutes was incredible,” said principal investigator Johanna Vos, from Trinity College Dublin. “Until now, we only had a little slice of the near-infrared spectrum from Hubble, and a few brightness measurements from Spitzer.”
The team noticed almost immediately that there were several distinct light-curve shapes. At any given time, some wavelengths were growing brighter, while others were becoming dimmer or not changing much at all. A number of different factors must be affecting the brightness variations.
“Imagine watching Earth from far away. If you were to look at each color separately, you would see different patterns that tell you something about its surface and atmosphere, even if you couldn’t make out the individual features,” explained co-author Philip Muirhead, also from Boston University. “Blue would increase as oceans rotate into view. Changes in brown and green would tell you something about soil and vegetation.”
Graphic B: Isolated Planetary-Mass Object SIMP 0136 (NIRSpec Light Curves)
These light curves show the change in brightness of three different sets of wavelengths (colors) of near-infrared light coming from the isolated planetary-mass object SIMP 0136 as it rotated. The light was captured by Webb’s NIRSpec (Near-Infrared Spectrograph), which collected a total of 5,726 spectra — one every 1.8 seconds — over the course of about 3 hours on July 23, 2023. The variations in brightness are thought to be related to different atmospheric features — deep clouds composed of iron particles, higher clouds made of tiny grains of silicate minerals, and high-altitude hot and cold spots — rotating in and out of view. The diagram at the right illustrates the possible structure of SIMP 0136’s atmosphere, with the colored arrows representing the same wavelengths of light shown in the light curves. Thick arrows represent more (brighter) light; thin arrows represent less (dimmer) light. NASA, ESA, CSA, and Joseph Olmsted (STScI) Patchy Clouds, Hot Spots, and Carbon Chemistry
To figure out what could be causing the variability on SIMP 0136, the team used atmospheric models to show where in the atmosphere each wavelength of light was originating.
“Different wavelengths provide information about different depths in the atmosphere,” explained McCarthy. “We started to realize that the wavelengths that had the most similar light-curve shapes also probed the same depths, which reinforced this idea that they must be caused by the same mechanism.”
One group of wavelengths, for example, originates deep in the atmosphere where there could be patchy clouds made of iron particles. A second group comes from higher clouds thought to be made of tiny grains of silicate minerals. The variations in both of these light curves are related to patchiness of the cloud layers.
A third group of wavelengths originates at very high altitude, far above the clouds, and seems to track temperature. Bright “hot spots” could be related to auroras that were previously detected at radio wavelengths, or to upwelling of hot gas from deeper in the atmosphere.
Some of the light curves cannot be explained by either clouds or temperature, but instead show variations related to atmospheric carbon chemistry. There could be pockets of carbon monoxide and carbon dioxide rotating in and out of view, or chemical reactions causing the atmosphere to change over time.
“We haven’t really figured out the chemistry part of the puzzle yet,” said Vos. “But these results are really exciting because they are showing us that the abundances of molecules like methane and carbon dioxide could change from place to place and over time. If we are looking at an exoplanet and can get only one measurement, we need to consider that it might not be representative of the entire planet.”
This research was conducted as part of Webb’s General Observer Program 3548.
The James Webb Space Telescope is the world’s premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
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Media Contacts
Laura Betz – laura.e.betz@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Margaret W. Carruthers – mcarruthers@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
Hannah Braun – hbraun@stsci.edu
Space Telescope Science Institute, Baltimore, Md.
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By Space Force
The DoD released guidance for DoD civilian employees on OPM's "What Did You Do Last Week" email.
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
A NASA exhibit of SLS (Space Launch System), which will return humanity to the Moon, is displayed in front of the Alabama Capitol in Montgomery during Alabama Space Day 2023 on April 11, 2023. NASA’s Marshall Space Flight Center in Huntsville, Alabama, the U.S. Space and Rocket Center, and aerospace industry partners, will host the 2025 Alabama Space Day in Montgomery on Tuesday, Feb. 25 to celebrate Alabama’s robust aerospace contributions and capabilities. The public and news media are invited to attend. NASA/Hannah Maginot Media are invited to attend the 2025 Alabama Space Day from 9:30 a.m. to 4:30 p.m. CST on Tuesday, Feb. 25, at the Alabama State Capitol in Montgomery.
NASA’s Marshall Space Flight Center in Huntsville, Alabama, the U.S. Space and Rocket Center, and aerospace industry partners will host the annual public event to celebrate Alabama’s robust aerospace contributions and capabilities, which provide significant economic benefits for the entire state.
Area middle school and high school students will have an opportunity to speak with NASA astronaut Loral O’Hara and participate in activities and exhibits. The event also will include a reading of a Space Day resolution by Alabama legislators with NASA Marshall Director Joseph Pelfrey, highlighting Alabama’s contributions to space exploration.
Media interested in interviewing NASA Marshall officials or attending NASA events should contact Hannah Maginot at hannah.l.maginot@nasa.gov or 256-932-1937.
Space Day 2025 exhibitors include: NASA Marshall, Teledyne Brown Engineering, KBR, Special Aerospace Services (SAS), Sentar, Blue Origin, Astrion, ULA, The University of Alabama in Huntsville’s Propulsion Research Center, Northrop Grumman, Lockheed Martin, and Boeing.
Media opportunities for the day include:
9:30 a.m. to 4:30 p.m. – Exhibits and STEM activities
Location: South Capitol Lawn and Tunnel between Capitol Building and State House
10:30 to 11 a.m. – Alabama Space Day 2025 Proclamation Ceremony
Location: Capitol Auditorium
11 to 11:30 a.m. – Alabama Space Authority Meeting
Location: Capitol Auditorium
1 to 2 p.m. – Resolution readings on the House and Senate Floors
About the NASA Marshall Space Flight Center
NASA’s Marshall Space Flight Center is celebrating 65 years of blending legacy with innovation, advancing space exploration and scientific discovery through collaboration, engineering excellence, and technical solutions that take humanity beyond tomorrow’s horizon.
For more information on NASA Marshall, visit https://www.nasa.gov/marshall.
Media Contact:
Hannah Maginot
Marshall Space Flight Center, Huntsville, Ala.
hannah.l.maginot@nasa.gov
256-932-1937
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Last Updated Feb 24, 2025 EditorBeth RidgewayLocationMarshall Space Flight Center Related Terms
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