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4. Amazon will show AI product images when you search for some reason  TechCrunch
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3. Bringing Gemma 4 12B to your Laptop: Unlocking Local, Agentic Workflows with Google AI Edge  blog.google
4. Gemma 4 12B: The Developer Guide  blog.google

4 Min Read

NASA Finds New Way Earth May Have Received Elements Needed for Life

NASA-supported scientists have provided new information about how the early Earth may have acquired some elements necessary for the planet to become habitable. They also suggest a new role for Jupiter in the distribution of these elements throughout the young solar system. The study, published today in Science Advances, examines this history by looking at the ratio of phosphorus to nitrogen in iron meteorites and in younger objects known as chondrites.

Planetary system formation

Our solar system formed from gas and dust that swirled around the proto-Sun more than 4.5 billion years ago. This gas contained the raw materials needed to form planets, moons, and ultimately life as we know it. Two elements of particular importance for life are nitrogen and phosphorus.

In the earliest stages of the solar system, gas and dust coalesced into bodies known as planetesimals. As these objects orbited the young Sun in this chaotic environment, planetesimals collided, leaving shattered remnants throughout the system. Eventually, many of these pieces were incorporated into planets and moons. Other pieces survive today as asteroids, still orbiting the Sun, and – if they have impacted the Earth and been recovered – as meteorites. These meteorites provide a window into the early solar system at a time before the Earth existed. Chondrites and iron meteorites are two different classes of these meteorites.

As their name suggests, iron meteorites are dense, metallic objects and are primarily made of iron-nickel alloy. Chondrites, on the other hand, are stony objects and they are responsible for most of the meteorites that have been found on Earth.

Each type of meteorite originates from planetesimals that formed at different times in our system. The oldest generation of planetesimals are the source of iron meteorites. Chondrites came from a second generation of planetesimals that formed 2-3 million years later.

Habitable planet building

Understanding how the Earth was made and the timing of its formation is important for astrobiologists who study how and when our planet became habitable for life as we know it. The young Earth needed to have a supply of life’s ingredients, including nitrogen and phosphorus, for the first living cells to form.

There is debate between scientists over where Earth’s stock of life-essential elements came from. Some evidence points to chondrites in the outer solar system traveling inward to arrive at Earth late in our planet’s formation process. However, the new study tells a different story.

Using laboratory experiments and geochemical models, the team reconstructed a map of phosphorus-nitrogen (P/N) ratios across the early solar system and found differences between the first (iron meteorites) and second (chondrites) generations of planetesimals.

The experiments and subsequent geochemical modeling showed that the first generation had a higher ratio of P/N in the outer solar system, with that ratio decreasing toward the inner solar system. This trend was reversed in the second generation of planetesimals, with higher P/N ratios in the inner solar system.

The thought is that during the formation of the first generation of planetesimals, there was an outward flow of material that raised the P/N ratio in the outer solar system. Then came Jupiter.

As Jupiter formed and grew to a tremendous size (and gravitational influence), the planet restricted the movement of phosphorus and nitrogen from the inner to outer solar system. This meant that when the second generation of planetesimals appeared, those in the inner solar system were left with a higher P/N ratio than their cousins further out.

“For our own solar system, Jupiter’s presence and growth history, indeed, seem to have played a critical role in determining the distribution of the basic chemical ingredients necessary for habitable worlds,” said Rajdeep Dasgupta of Rice University in Houston and senior author on the study. “It remains an open question whether a life-essential element budget similar to Earth’s can be established without a Jupiter-like planet in the population.”

Geochemical accretion modeling further shows that Earth’s present-day P/N signature is best reproduced by the inner solar system planetesimals, either those related to iron meteorites or those related to chondrites.

“The study suggests that Earth acquired its inventory of the life-essential elements phosphorous and nitrogen primarily from the inner solar system, without requiring a significant contribution from outer solar system chondrites,” said study lead author Debjeet Pathak, graduate student at Rice University.

For more information on astrobiology at NASA, visit:

https://science.nasa.gov/astrobiology

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

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Aaron Gronstal

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Sea level height data from the international Sentinel-6 Michael Freilich satellite collected from March to May 2026 show higher, warmer water moving from the western Pacific Ocean to just off the coast of Colombia, Ecuador, and Peru. This phenomenon is known as a warm Kelvin wave, signified in this animation of the data by yellow, orange, red, and white. The emergence of Kelvin waves in the early part the year is a signal that an El Niño event is likely to follow.

In early 2026, measurements from Sentinel-6 Michael Freilich showed a small Kelvin wave forming around Micronesia in late January and dissipating by mid-February. The wave shown in the animation emerged in early March, then moved east over time. By mid-May, the seas around Peru were more than 5.9 inches (15 centimeters) higher than long-term averages. Because water expands as it warms, a rise in elevation of an area of the ocean indicates increasing temperature.

The additional heat at the sea surface can change the circulation patterns of energy, water, and air in the atmosphere, which can affect weather. El Niños can cause heavy precipitation in some regions and deficits in others, influencing daily life and commerce around the world.

Sentinel-6 Michael Freilich, named after former NASA Earth Science Division Director Michael Freilich, is one of two satellites that compose the Copernicus Sentinel-6/Jason-CS (Continuity of Service) mission.

Sentinel-6/Jason-CS was jointly developed by ESA, the European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT), NASA, and NOAA, with funding support from the European Commission and technical support on performance from the French space agency CNES (Centre National d’Études Spatiales). Spacecraft monitoring and control, as well as the processing of all the altimeter science data, is carried out by EUMETSAT on behalf of the European Union’s Copernicus programme, with the support of all partner agencies.

A division of Caltech in Pasadena, NASA’s Jet Propulsion Laboratory contributed three science instruments for each Sentinel-6 satellite: the Advanced Microwave Radiometer, the Global Navigation Satellite System – Radio Occultation, and the Laser Retroreflector Array. NASA also contributed launch services, ground systems supporting operation of the NASA science instruments, the science data processors for two of these instruments, and support for the U.S. members of the international Ocean Surface Topography Science Team.

To learn more about Sentinel-6 Michael Freilich, visit:

https://www.nasa.gov/sentinel-6

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The focus of this NASA/ESA Hubble Space Telescope image released on May 29, 2026, is an active spiral galaxy on a journey lasting hundreds of millions of years. The galaxy Messier 88 (M88), also known as NGC 4501, is located about 63 million light-years away in the constellation Coma Berenices (Berenice’s Hair).

M88 is an active galaxy, which means that its center harbors a supermassive black hole that is snacking on gas and dust. Astronomers estimate the black hole is around 100 million times as massive as the Sun, and it appears to be powering outflows of gas from the galaxy’s center.

Learn more about M88.

Image credit: ESA/Hubble & NASA, D. Thilker

A powerful but mostly unseen water system at work during rocket engine tests at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, underwent an upgrade in May.

Crews brought the High Pressure Industrial Water Facility’s 66-million-gallon reservoir to its lowest level since construction in the 1960s by pumping out about 40 million gallons of water over three days.

This brought the reservoir, measuring 800 feet in diameter and about 25 feet deep, down to the level needed to replace a 3,000 gallon per minute pump that supplies water for fire suppression to the test complexes.

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Lowering the Reservoir

May 7, 2026 – May 11, 2026

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BEFORE (SSC-20260507-s00393) The High Pressure Industrial Water Facility’s 66-million-gallon reservoir is shown at NASA’s Stennis Space Center on May 7 as work gets underway to remove about 40 million gallons of water to complete upgrades. AFTER (SSC-20260511-s00420) The reservoir is shown at NASA’s Stennis Space Center on May 11 at its lowest level since construction in the 1960s. Crews lowered the reservoir by pumping out about 40 million gallons over three days to complete upgrades.

For a typical RS-25 engine test supporting NASA’s Artemis missions, about five million gallons of water flow from the reservoir to the Fred Haise Test Stand. The water cools the engine exhaust that reaches up to 6,000 degrees Fahrenheit, supplies water to the flame deflector and helps with sound suppression during a test.

A hot fire test produces critical data to ensure an engine is safe and reliable.

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A View from the Thad Cochran Test Stand

May 7, 2026 – May 11, 2026

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BEFORE (SSC-20260507-s00395) – A view from the Thad Cochran Test Stand at NASA’s Stennis Space Center on May 7 shows the High Pressure Industrial Water Facility’s 66-milion-gallon reservoir as work gets underway to remove about 40 million gallons of water to complete upgrades. AFTER (SSC-20260511-s00423) – A view from the Thad Cochran Test Stand at NASA’s Stennis Space Center on May 11 shows the reservoir at its lowest level since construction in the 1960s. Crews lowered the reservoir by pumping out 40 million gallons over three days to complete upgrades.

The water used during a test is recycled for future use as it flows back into the on-site canal system, before returning to the reservoir.

“The old pump that supported fire suppression for testing reached its end of life, so this project promotes reliability with the upgrade,” said Justin Lucas, NASA project manager.

In addition to a new pump, the piping has improved to a 14-inch-to-12-inch configuration.

Picture trying to drink water from a big cup using a tiny coffee stirrer. This is similar to how the previous pump relied on piping that narrowed from 14 inches down to 10 inches before reaching the pump. The water moved but required more work from the system.

“With the upgraded configuration, less velocity inside the pipe with the same amount of flow equals a longer lasting pipe, pump, and hardware,” said Lucas.

The water system upgrades have strengthened a vital system that supports NASA’s Artemis missions, along with commercial companies operating at NASA Stennis, home to America’s largest multiuser propulsion test site.

The first mission devoted to observing the Martian atmosphere and its evolution, NASA’s MAVEN (Mars Atmosphere and Volatile Evolution), has ended after more than 11 years in orbit at Mars and a decade beyond its primary, one-year mission. The spacecraft was heard last on Dec. 6, when it experienced an unexpected loss of signal after it passed behind the Red Planet.

NASA will host a media teleconference at 2 p.m. EDT today, Wednesday, June 3, to discuss MAVEN’s achievements.

The agency convened an anomaly review board in February to evaluate recovery efforts and assess the spacecraft’s probable current state. The review board has determined that the MAVEN spacecraft is not recoverable, and it is no longer capable of performing its science and data relay mission, which is consistent with the mission team’s findings.

Telemetry from MAVEN prior to the spacecraft’s passage behind Mars in December showed all subsystems working normally. After the spacecraft emerged, NASA’s Deep Space Network (DSN) did not observe a signal. A brief fragment of telemetry data from analysis of radio signals recorded by the DSN’s open-loop receivers indicated the spacecraft was in safe mode and rotating at an unusually high rate when it emerged from behind Mars, indicating a disruption in MAVEN’s orbit trajectory. The review board concluded that due to this rotation, the batteries on the spacecraft had drained, causing the communications system to lose power and rendering MAVEN in an unrecoverable state.

These preliminary findings do not address a potential root cause for the anomaly, which still is being investigated. The review board is expected to provide its final report later this year. NASA has begun the official process of decommissioning the MAVEN mission, following standard procedures to archive the full mission dataset for the science and exploration communities.

“The science MAVEN has given us is key to informing what kind of radiation protection and safety measures we must take before sending humans to Mars,” said Louise Prockter, director of the Planetary Science Division at NASA Headquarters in Washington. “The data collected from MAVEN will continue to provide valuable insight into Mars for decades to come.”

Launched in November 2013, the MAVEN mission explored the Red Planet’s upper atmosphere, ionosphere, and interactions with the Sun to explore the loss of the Martian atmosphere to space. Understanding atmospheric loss gives scientists insight into the history of the planet’s atmosphere and climate, liquid water, and planetary habitability.

“The MAVEN mission has truly advanced our understanding of the Martian atmosphere and evolution. This dataset has had a tremendous impact on the field,” said Shannon Curry, MAVEN’s principal investigator and a researcher at the Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder. “Our science team is exceptionally proud of all of these amazing discoveries.”

Sun’s impact on Mars

One of MAVEN’s first major results was that the erosion of Mars’ atmosphere increases significantly during solar storms. The team studied how the solar wind, which is a stream of charged particles continually streaming from the Sun, and solar storms continually strip away Mars’ atmosphere, as well as how this process played a key role in altering the Martian climate from a potentially habitable world to today’s cold, arid planet. The MAVEN mission made unprecedented strides in advancing our understanding of how the Sun and space weather affect Mars, as it was the only spacecraft that could simultaneously take measurements of both the Sun and the Martian atmospheric response.

Martian light shows

The MAVEN mission discovered several types of auroras that light up when energetic particles plunge into the atmosphere, bombarding gases and making them glow. The MAVEN team showed that protons create new kinds of auroras at Mars. On Earth, proton auroras only occur in very small regions near the poles, whereas at Mars they can occur everywhere.

Mars’ atmosphere sputters into space

To better understand how Mars lost most of its atmosphere, MAVEN measured atmospheric sputtering for the first time at any planet. The team did this by observing argon, which is a noble gas, meaning it rarely reacts with other constituents in the Martian atmosphere. The only significant way it can be removed is by atmospheric sputtering, a process where ions crash into the Martian atmosphere at high enough speeds that they splash gas molecules out of the atmosphere, much like doing a cannonball into a pool. The team used 11 years of data to reveal the presence of sputtered argon at high altitudes in the exact locations that the energetic particles crashed into the atmosphere, showing sputtering in real time.

Understanding Mars’ dusty secrets

In 2018, a series of dust storms created a dust cloud so large that it enveloped the Red Planet. The MAVEN team studied how this “global” dust storm affected Mars’ upper atmosphere to understand how these events affected the escape of water to space. It confirmed that heating from dust storms can loft water molecules far higher into the atmosphere than usual, leading to a sudden surge in water lost to space.

Chasing comets

In addition to Martian science, MAVEN contributed to NASA’s effort to observe comet 3I/ATLAS at Mars. Over the course of 10 days last year, the MAVEN team designed a new observing campaign to capture 3I/ATLAS by taking multiple images of the comet in several wavelengths, much like using various filters on a camera. Then it snapped high-resolution UV images to identify the hydrogen coming from the comet. By studying a combination of these images, scientists can identify a variety of molecules and better understand the comet’s composition and history.  

During the mission’s lifetime, MAVEN’s science team produced more than 800 publications, and additional publications are planned.

In addition to science, the MAVEN spacecraft was an instrumental player in NASA’s Mars Relay Network, communicating data from Mars rovers to Earth. It also holds the solar system record for most data relayed from another planet in a single day.

Audio of today’s media teleconference will stream on the agency’s website at:

https://www.nasa.gov/live

Participants in the teleconference include:

• Tiffany Morgan, director, Mars Exploration Program, Planetary Science Division, NASA Headquarters
• Mike Moreau, project manager, MAVEN, NASA’s Goddard Space Flight Center, Greenbelt, Maryland
• Greg Heckler, deputy program manager for Capability Development, SCaN (Space Communications and Navigation), NASA Headquarters
• Shannon Curry, MAVEN principal investigator, Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder

To ask questions by phone, media must RSVP no later than 12 p.m. to: sarah.frazier@nasa.gov. NASA’s media accreditation policy is available online.

The MAVEN mission is part of NASA’s Mars Exploration Program portfolio. The mission’s principal investigator is based at the Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder, which also is responsible for managing science operations and public outreach and communications. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the MAVEN mission. Lockheed Martin Space built the spacecraft and is responsible for mission operations. NASA’s Jet Propulsion Laboratory in Southern California provides navigation and Deep Space Network support.  

For more information about NASA’s Mars Exploration Program, visit:

https://science.nasa.gov/planetary-science/programs/mars-exploration

-end-

Karen Fox / Alana Johnson
Headquarters, Washington
240-285-5155 / 202-672-4780
karen.c.fox@nasa.gov / alana.r.johnson@nasa.gov

Sarah Frazier
Goddard Space Flight Center, Greenbelt, Md.
202-853-7191
sarah.frazier@nasa.gov