Bracketology stock watch: Michigan State, Florida trending up while Kansas and SMU struggle  CBS Sports

Why MacBook Neo is trending  CNN

February Jobs Report Shows 92,000 Jobs Lost | TRENDING  The Hill

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1. MacBook Neo benchmark results are predictably close to iPhone 16 Pro, M1 comparable  AppleInsider
2. MacBook Neo  Apple
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2. Xbox Confirms 'Project Helix', Its Next-Gen Console That Will Also Play PC Games  IGN
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1. Google makes Gmail, Drive, and Docs ‘agent-ready’ for OpenClaw  PCWorld
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New research reveals that when NASA’s DART (Double Asteroid Redirection Test) spacecraft intentionally impacted the asteroid moonlet Dimorphos in September 2022, it didn’t just change the motion of Dimorphos around its larger companion, Didymos; the crash also shifted the orbit of both asteroids around the Sun. Linked together by gravity, Didymos and Dimorphos orbit each other around a shared center of mass in a configuration known as a binary system, so changes to one asteroid affect the other.

As detailed in a study published on Friday in the journal Science Advances, observations of the pair’s motion revealed that the 770-day orbital period around the Sun changed by a fraction of a second after the DART spacecraft’s impact on Dimorphos. That change marks the first time a human-made object has measurably altered the path of a celestial body around the Sun.

“This is a tiny change to the orbit, but given enough time, even a tiny change can grow to a significant deflection,” said Thomas Statler, lead scientist for solar system small bodies at NASA Headquarters in Washington. “The team’s amazingly precise measurement again validates kinetic impact as a technique for defending Earth against asteroid hazards and shows how a binary asteroid might be deflected by impacting just one member of the pair.”

High impact

When DART struck Dimorphos, the impact blasted a huge cloud of rocky debris into space, altering the shape of the asteroid, which measures 560 feet (170 meters) wide. Because the debris carried its own momentum away from the asteroid, it gave Dimorphos an explosive thrust — what scientists call the momentum enhancement factor. More debris being kicked out means more oomph. According to the new research, the momentum enhancement factor for DART’s impact was about two, meaning that the debris loss doubled the punch created by the spacecraft alone.

Earlier research showed that the smaller asteroid’s 12-hour orbital period around the nearly half-mile-wide (805-meter-wide) Didymos shortened by 33 minutes. The new study shows the impact ejected so much material from the binary system that it also changed the binary’s orbital period around the Sun by 0.15 seconds.

“The change in the binary system’s orbital speed was about 11.7 microns per second, or 1.7 inches per hour,” said Rahil Makadia, the study’s lead author at the University of Illinois Urbana-Champaign. “Over time, such a small change in an asteroid’s motion can make the difference between a hazardous object hitting or missing our planet.”

Although Didymos was not on an impact trajectory with Earth and it was impossible for the DART mission to put it on one, that change in orbital speed underscores the role spacecraft — aka kinetic impactors in this context — could play if a potentially hazardous asteroid is found to be on a collision course in the future. The key is detecting near-Earth objects far enough in advance to send a kinetic impactor.

To that end, NASA is building the Near-Earth Object (NEO) Surveyor mission. Managed by NASA’s Jet Propulsion Laboratory in Southern California, this next-generation space survey telescope is the first to be built for planetary defense. The mission will seek out some of the hardest-to-find near-Earth objects, such as dark asteroids and comets that don’t reflect much visible light.

How they did it

To prove DART had a detectable influence on both asteroids — not just on the smaller Dimorphos — the researchers needed to measure Didymos’ orbit around the Sun to exquisite precision. So, in addition to making radar and other ground-based observations of the asteroid, they tracked stellar occultations, which occur when the asteroid passes exactly in front of a star, causing the pinpoint of light to blink out for a fraction of a second. This technique provides extremely precise measurements of the asteroid’s speed, shape, and position.

Measuring stellar occultations is challenging: Astronomers have to be in the right place at the right time with several observing stations, sometimes miles apart, to track the predicted path of the asteroid in front of a specific star. The team relied on volunteer astronomers around the globe who recorded 22 stellar occultations between October 2022 and March 2025.

“When combined with years of existing ground-based observations, these stellar occultation observations became key in helping us calculate how DART had changed Didymos’ orbit,” said study co-lead Steve Chesley, a senior research scientist at JPL. “This work is highly weather dependent and often requires travel to remote regions with no guarantee of success. This result would not have been possible without the dedication of dozens of volunteer occultation observers around the world.”

Studying changes in Didymos’ motion also helped the researchers calculate the densities of both asteroids. Dimorphos is slightly less dense than previously thought, supporting the theory that it formed from rocky debris shed by a rapidly spinning Didymos. This loose material eventually clumped together to form Dimorphos, a “rubble pile” asteroid.

More about DART

The DART spacecraft was designed, built, and operated by the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Planetary Defense Coordination Office, which oversees the agency’s ongoing efforts in planetary defense. It was humanity’s first mission to intentionally move a celestial object.

For more information about the DART mission visit:

https://science.nasa.gov/mission/dart/

Media Contacts

Ian J. O’Neill
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-2649
ian.j.oneill@jpl.nasa.gov

Karen Fox / Molly Wasser
NASA Headquarters, Washington
240-285-5155 / 240-419-1732
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov

2025-015

As NASA invites the public to follow the Artemis II mission as a crew of four astronauts venture around the Moon inside the agency’s Orion spacecraft, people around the world can pinpoint Orion during its journey using the Artemis Real-time Orbit Website (AROW).

During the approximately 10-day mission, NASA will test how the spacecraft’s systems operate as designed with crew aboard in the deep space environment. Using AROW, anyone with internet access can track where Orion and the crew are, including their distance from Earth, distance from the Moon, mission duration, and more. Access to AROW is available on:

• NASA’s website (www.nasa.gov/trackartemis)
• The NASA app (www.nasa.gov/nasa-app)

Using AROW, the public can visualize data that is collected by sensors on Orion and then sent to the Mission Control Center at NASA’s Johnson Space Center in Houston during its flight. It will provide constant information using this real-time data beginning about one minute after liftoff through Orion’s atmospheric reentry to Earth at the end of the mission.

Online, users can follow AROW to see where Orion and the crew are in relation to the Earth and the Moon and follow Orion’s path during the mission. Users can view key mission milestones and characteristics on the Moon, including information about landing sites from the Apollo program.

The mobile app includes similar features to the website, with the addition of augmented reality tracker. After a brief calibration sequence, on-screen indicators will direct users where to move their phone to see where Orion currently is relative to their position on Earth. Mobile app tracking will be available once Orion separates from the rocket’s upper stage, approximately three hours into the mission.

State vectors, or data that describes precisely where Orion is located and how it moves, also will be provided by AROW, following a proximity operations demonstration to evaluate the manual handling qualities of Orion. 

These vectors can be used for data lovers, artists, and creatives to make their own tracking app or data visualization. Also available for download will be trajectory data from the flight, called an ephemeris, found at the bottom of this page, after the mission begins. The ephemeris data can be used to track Orion with your own spaceflight software application or telescope, or to create projects such as a physics model, animation, visualization, or tracking application.

Artemis II, the agency’s first crewed mission in the Artemis campaign, is a key step in NASA’s path toward establishing a long-term presence at the Moon and confirming the systems needed to support future lunar surface exploration and paving the way for the first crewed mission to Mars.

To learn more about NASA’s Artemis campaign, visit:

https://www.nasa.gov/artemis

NASA astronaut Jessica Meir trims the hair of fellow NASA astronaut Jack Hathaway in this March 1, 2026, image. Meir uses an electric razor attached to a vacuum that collects loose clippings to keep the station’s atmosphere clean in microgravity. Crew on the International Space Station also use weekends to complete housekeeping tasks.

Learn more about life on the International Space Station.

Image credit: NASA/Chris Williams

After delivering more than 11,000 pounds of supplies, science investigations, hardware, and other cargo to the International Space Station for NASA and its international partners, the Cygnus XL spacecraft supporting Northrop Grumman’s 23rd Commercial Resupply Services mission is scheduled to depart the orbiting laboratory Thursday, March 12.

Watch NASA’s live coverage of undocking and departure beginning at 6:45 a.m. EDT on NASA+, Amazon Prime, and the agency’s YouTube channel. Learn how to watch NASA content through a variety of online platforms, including social media.

Flight controllers on the ground will send commands for the space station’s Canadarm2 robotic arm to detach the Cygnus XL spacecraft from the Unity module’s Earth‑facing port and maneuver it into position for release at 7 a.m. ESA (European Space Agency) astronaut Sophie Adenot will monitor Cygnus’ systems as it departs.

Cygnus XL will be commanded to deorbit on Saturday, March 14, to dispose of several thousand pounds of trash during its reentry into Earth’s atmosphere, where it will harmlessly burn up.

The Northrop Grumman spacecraft launched in September 2025 atop a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida. This mission is the first flight of the larger, more cargo-capable version of the solar-powered spacecraft.

Learn more about this NASA commercial resupply mission at:

https://www.nasa.gov/mission/nasas-northrop-grumman-crs-23/

-end-

Josh Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov

Iceberg A-23A has had a more eventful run than most of the large Antarctic icebergs that have calved from the continent’s ice shelves in recent decades. Over its winding, forty-plus-year journey, the “megaberg” spent decades grounded in the Weddell Sea before drifting north, twirling in an ocean vortex for months, and nearly colliding with an island in 2025.

By 2026, the iconic iceberg, sopping with meltwater and shedding smaller bergs as it moved into warmer ocean waters, put on one more show. The chunks of ice and frigid glacial meltwater left in its wake appear to have fueled a surge in phytoplankton abundance, known as a bloom, observed in surface waters by NASA satellites.

Phytoplankton, which harvest sunlight to carry out photosynthesis, form the base of the marine food web. They also produce up to half of the oxygen on Earth and serve as part of the ocean’s “biological carbon pump,” which transfers carbon dioxide from the atmosphere to the deep ocean.

The VIIRS (Visible Infrared Imaging Radiometer Suite) on the Suomi NPP satellite captured this image (left) of the splintering tabular berg on January 25, 2026. The image was acquired after several large pieces had drifted northwestward and then curled toward the northeast following the iceberg breaking apart on January 9. A debris field full of brash ice, small icebergs, and bergy bits was visible east of the largest remaining pieces. Also on January 25, the OCI (Ocean Color Instrument) on NASA’s PACE (Plankton, Aerosol, Cloud, Ocean Ecosystem) satellite detected plumes of chlorophyll-a (right) drifting around the remaining bergs and debris field. Researchers use chlorophyll concentrations as a marker of phytoplankton abundance.

“This bloom is too big and too clearly spreading from the icebergs not to be strongly linked to them,” said Grant Bigg, an emeritus oceanographer at the University of Sheffield. Bigg, who has studied how large icebergs have enhanced phytoplankton activity in this region, noted that while blooms unconnected to icebergs do occur regularly here, satellite imagery shows a connection that has persisted for weeks—increasing his confidence that the iceberg and phytoplankton bloom are related.

The primary factors that limit phytoplankton in this region are access to light and nutrients, explained Heidi Dierssen, an oceanographer at the University of Connecticut. Light can be limiting even in the summer because phytoplankton are often mixed too deeply in the water column due to high winds and turbulence.

Melting icebergs can boost phytoplankton by both creating a stable surface layer with favorable growth conditions and releasing plumes of meltwater rich in iron—a key nutrient for phytoplankton that can be scarce in this part of the South Atlantic, she said. Research indicates that icebergs also often contain significant amounts of manganese and macronutrients, such as nitrates and phosphates, that can benefit phytoplankton. These nutrients often accumulate on icebergs through windblown dust or through contact with bedrock or soil.

The Landsat 8 image above, captured by the OLI (Operational Land Imager) on January 25, 2026, shows blue meltwater pooling on several of the larger fragments. The linear patterns are likely related to striations that were etched hundreds of years ago when the ice was part of a glacier moving across Antarctic bedrock. Brown staining, perhaps soil or sediment, is visible on some of the bergs.

Bigg also noted that the phytoplankton signal appears to be more concentrated near the smaller bergs, possibly because these are melting faster, releasing nutrient-rich material at a higher rate. Dierssen added that it’s also possible that chlorophyll concentrations may be higher near the largest bergs than they appear because algorithms sometimes overcorrect for “adjacency effects” near bright surfaces, like ice, when processing chlorophyll data.

Ivona Cetinić, a researcher on NASA’s PACE science team, checked a database for clues about the smallest, or “pico,” phytoplankton swirling around the bergs. The tool, called MOANA (Multiple Ordination ANAlysis), taps into hyperspectral satellite observations of ocean color from PACE.

MOANA indicated that picoeukaryotic phytoplankton—microscopic eukaryotic organisms that respond quickly to changes in temperature or nutrient availability—were thriving in these waters when the image was captured. The swirls to the west of the berg were made of a slightly larger group of cyanobacteria called Synechococcus, she said. The PACE team is currently developing additional tools that will help identify communities of larger types of phytoplankton, which were likely present as well.

Some research suggests that icebergs may have contributed significantly to phytoplankton blooms in this region in recent years, possibly accounting for up to one-fifth of the Southern Ocean’s total carbon sequestration. Other research teams have concluded that surface waters trailing icebergs were about one-third more likely to have increased amounts of phytoplankton compared to background levels.  

How long iceberg A-23A will enhance phytoplankton productivity before and after disintegrating completely remains an open question. NASA scientists watching the berg say it continued to shrink and shed mass in February, but as of March 3, 2026, it remained just slightly above the size threshold required for naming and tracking by the U.S. National Ice Center.

Past research indicates that icebergs can sustain elevated chlorophyll concentrations for more than a month after passing through in trails that stretch for hundreds of kilometers. Icebergs and the blooms surrounding them have also been known to attract fish, seabirds, and other types of marine life, highlighting the important ecological role they play.   

NASA Earth Observatory images by Michala Garrison, using VIIRS data from NASA EOSDIS LANCE, GIBS/Worldview, and the Suomi National Polar-orbiting Partnership, PACE data from the NASA Ocean Biology Distributed Active Archive Center OB.DAAC, and Landsat data from the U.S. Geological Survey. Story Adam Voiland.

References & Resources

• Duprat, L. et al. (2016) Enhanced Southern Ocean marine productivity due to fertilization by giant icebergs. Nature Geoscience, 9, 219-221.
• Eos (2016, January 15) Icebergs Fertilize Southern Ocean, Sequester Carbon. Accessed March 5, 2026.
• Knowable Magazine (2018, March 15) The base of the iceberg: It’s big and teeming with life. Accessed March 5, 2026.
• Krause, J. et al. (2024) The macronutrient and micronutrient (iron and manganese) content of icebergs. The Cryosphere, 18, 5735-5752.
• Lucas, N., et al. (2025) Giant iceberg meltwater increases upper-ocean stratification and vertical mixing. Nature Geoscience, 18, 305-312.
• NASA (2026) Plankton, Aerosol, Cloud, ocean Ecosystem. Accessed March 5, 2026.
• NASA Earth Observatory (2026, January 8) Meltwater Turns Iceberg A-23A Blue. Accessed March 5, 2026.
• NASA Earth Observatory (2025, September 25) A Giant Iceberg’s Final Drift. Accessed March 5, 2026.
• Raiswell, R., et al. (2008) Bioavailable iron in the Southern Ocean: the significance of the iceberg conveyor belt. Geochemical Transitions, 9, 7.
• Schwarz, J.N. & Schodlok, M.P. (2009) Impact of drifting icebergs on surface phytoplankton biomass in the Southern Ocean: Ocean colour remote sensing and in situ iceberg tracking. Oceanographic Research Papers, 56(10), 1727-1741.
• Wu, S. & Hou, S. (2017) Impact of icebergs on net primary productivity in the Southern Ocean. The Cryosphere, 11, 707-722

A 61-year-old worker died on Thursday after reportedly getting stuck between a truck trailer and a loading dock.

Trump's Department of War feud with Anthropic won't impact other companies that are using Claude via Microsoft and Google products.

It's the first permit to be issued by the Nuclear Regulatory Commission in nearly a decade.

In a recent security partnership with Mozilla, Anthropic found 22 separate vulnerabilities in Firefox — 14 of them classified as "high-severity."

The Pentagon has officially designated Anthropic a supply-chain risk after the two failed to agree on how much control the military should have over its AI models, including its use in autonomous weapons and mass domestic surveillance. As Anthropic’s $200 million contract fell apart, the DoD turned to OpenAI instead, which accepted and then watched ChatGPT uninstalls surge 295%. As the stakes keep rising, the question remains: how much unrestricted […]