New Radio Silence and Size Estimate Sharpen the Mystery of Interstellar Object 3I/ATLAS
America ı By Samuel Lopez
1,220 0 Comments
KEY FINDINGS
- The data came back quiet.
- The physics, however, speaks loudly.
- And together, they tighten the margins around an object that continues to resist simple explanation.
Fresh radio scans and physics-based modeling narrow what 3I ATLAS can be—and what it is not.
By Samuel Lopez | USA Herald - A new peer-reviewed analysis of radio observations has placed the most stringent limits yet on whether the interstellar object known as 3I/ATLAS is emitting artificial radio signals, while a separate preprint has independently converged on a nucleus size that reshapes how scientists understand its unusual behavior. Together, the findings narrow the space of plausible explanations without resolving the deeper question of why this object continues to behave so unlike an ordinary comet.
The radio study examined 7.25 hours of data collected on July 2, 2025, using the Allen Telescope Array, spanning frequencies from 1 to 9 gigahertz. Within that enormous dataset, researchers initially detected nearly 74 million narrowband signal “hits.” After extensive filtering to remove radio frequency interference and unrelated sky sources, the dataset was reduced to roughly two million candidates. When sky localization was applied—matching signals to the precise position of 3I ATLAS—only 211 hits remained. Each was then visually inspected in the time–frequency domain. None displayed characteristics that would justify follow-up as a credible signal originating from the object.
Accounting for the object’s rapid radial velocity and Doppler drift, the researchers derived an upper bound on any isotropic radio transmission from 3I/ATLAS of approximately 10 to 110 watts across the observed frequencies. That threshold was later tightened even further by independent observations using the 100-meter Robert C. Byrd Green Bank Telescope, which constrained any possible emissions in the 1–12 gigahertz range on December 19, 2025, to roughly a tenth of a watt. In practical terms, the data strongly disfavor the presence of any continuous, beacon-like radio transmission detectable with current instrumentation.
At the same time, a newly released preprint has combined updated measurements of non-gravitational acceleration with estimates of mass-loss rates to infer the physical size of the object itself. Using momentum conservation, the analysis concludes that the nucleus of 3I/ATLAS is on the order of one kilometer in diameter. That figure independently confirms a prediction made in early July, shortly after the object’s discovery, and places 3I/ATLAS firmly in the size range of large cometary bodies—at least on paper.
But the apparent clarity of that estimate masks substantial uncertainty. Since November 2025, NASA’s JPL Horizons system has repeatedly revised downward the measured non-gravitational acceleration of 3I/ATLAS as additional astrometric data were incorporated. Those revisions depend sensitively on how positional uncertainties are modeled and on assumptions about how acceleration varies with solar distance. Small changes in those inputs can propagate into large differences in inferred mass and size.
There is also the unresolved question of what, exactly, is providing the recoil force. The current models assume gas outflow at thermal speeds, but prior work—including a study co-authored with Eric Keto—suggests that the dominant momentum transfer could instead come from the ejection of icy fragments. Fragment recoil would alter both the efficiency and directionality of the force, complicating any back-calculation of size from acceleration alone.
Directionality itself remains one of the most striking features of this object. High-resolution imaging from the Hubble Space Telescope showed a dominant anti-tail jet pointed toward the Sun both before perihelion, in July 2025, and after perihelion, in late November. During that same passage, the Sun’s gravity deflected the trajectory of 3I ATLAS by only about 16 degrees. Under those conditions, sunward jets active before and after perihelion would impart nearly cancelling momentum impulses to the nucleus. Current models do not yet fully incorporate how jet orientation may have evolved over the past six months, nor do they benefit from direct spectroscopic measurements of jet velocities—data that astronomers hope the James Webb Space Telescope may soon provide.
Taken together, the radio silence and the kilometer-scale size estimate do not resolve the mystery of 3I/ATLAS. Instead, they refine it. The object appears large, dynamically active, and energetically constrained in ways that rule out some hypotheses while leaving others intact. As I reviewed the cumulative record—from anomalous non-gravitational acceleration to persistent sunward jets—the pattern that emerges is not one of exotic certainty, but of narrowing possibilities. Each new dataset trims the margins, even as the core questions remain open.
What the evidence suggests, but does not yet prove, is that 3I/ATLAS operates at the edge of known cometary physics. The coming observational windows, and especially any direct measurements of jet composition and velocity, will be critical in determining whether this interstellar visitor ultimately fits within established natural models—or forces those models to expand.
FOLLOW US
Recent Posts
A Violent July 4 Attack Leads To Federal Convictions For…
Trump UFO Directive Could Shake Religion Science And Power Structures…
Ancient Astronomers Warned That Strange Skies Precede Global Upheaval—Why Their…
Oil, War, and the Insurance Shockwave Already Hitting America
US Navy Prepares To Escort Tankers Through Strait of Hormuz…
War Insurance Reality Americans Face Even When the Battlefield Is…
“There Is Nothing They Can Do About It” Trump Declares…
Don’t Miss It
Supreme Court Asked To Step In As 98-Year-Old Federal Judge Pauline Newman Fights Suspension From The Bench
By – Samuel LopezThomas Medlin Found Dead in Brooklyn Waters After Two-Month Search
By – Rachel MooreAmerican Refuelling Aircraft Crashed in Iraq During Military Operation
By – Rachel MooreAstronomers Witness Birth of a Magnetar in Explosive Cosmic Event
By – Rachel MooreFirefly Launches Alpha Flight 7 Mission Successfully from California Spaceport
By – Rachel MooreMicrosoft Copilot Health AI Tool Launches to Help Users Understand Medical Data
By – Rachel MooreFTC Refunds for Invitation Homes: $47.2 Million Headed to Hundreds of Thousands of Renters
By – Rihem AkkouchePalantir and Nvidia Partnership Unveiled as AI Alliances Expand at AIPCon 9
By – Rihem Akkouche
Kelly Warner Law Firm Blames USA Herald for Arizona Bar Investigation
In what appears as a desperate attempt to defend multiple allegations of fraud on the courts, the Kelly Warner Law…
By – USA Herald
Aaron Kelly Law Firm Resorts To Attacking Former Client Again On KellyWarnerLaw.com – Pattern Recognized
Attorney Aaron Kelly and his law partner Daniel Warner are currently under investigation by the Arizona Bar for legal misconduct.…
By – Jeff Watterson
Arizona Bar Opens Investigation on Attorney Aaron Kelly
USA Herald recently reported on a developing story involving Attorneys Daniel Warner and Aaron Kelly. Both Warner and Kelly have…
By – Paul O'Neal
Old Dominion University Shooting Investigated as Terrorism After Gunman Identified
Authorities have identified the suspect in the Old Dominion University Shooting, a violent campus attack that left one person dead…
By – Rihem Akkouche
Gulf Travelers’ Jet Prices Soar as War Disrupts Middle East Air Travel
As conflict intensifies across the Middle East, a sudden and dramatic shift in air travel has unfolded. The escalating war…
By – Rihem Akkouche
Shooting at Michigan Synagogue Leaves Suspect Dead After Security Confrontation
A violent incident unfolded Thursday afternoon at Temple Israel, where authorities say a suspect rammed a truck into the synagogue…
By – Rihem Akkouche
Stolen Military Drones And The Emerging Threat of Foreign UAV Attacks On The California Coast
By Samuel A. Lopez | USA Herald – A quiet warning issued to California law-enforcement agencies has raised a troubling…
By – Samuel Lopez
Hollywood’s “Disclosure Day” And Washington’s Silence Raise Questions About Timing of UFO Transparency
By Samuel A. Lopez | USA Herald – A curious convergence is beginning to capture attention among observers of government transparency, national…
By – Samuel Lopez
The World Cup Security Reckoning: Trump Warns Iran Soccer Team About Safety As War Tensions Spill Into Global Sports
By Samuel A. Lopez | USA Herald – A short Truth-Social post from President Donald Trump on Thursday morning is now…
By – Samuel Lopez
The World Cup Security Reckoning: Trump Warns Iran Soccer Team About Safety As War Tensions Spill Into Global Sports
By Samuel A. Lopez | USA Herald – A short Truth-Social post from President Donald Trump on Thursday morning is now…
By – Samuel Lopez
Scientists Identify 22 Anomalies In Interstellar Object 3I/ATLAS As It Leaves The Solar System
By Samuel A. Lopez | USA Herald – The interstellar object 3I/ATLAS is now fading from view, heading back into deep space…
By – Samuel Lopez
Iran Appears To Have Conducted Its First Major Cyberattack Against A U.S. Company, Since The War Began – New Front Opens Against American Healthcare
An alleged Iran-linked cyberattack on Stryker appears to mark a dangerous turn in the conflict, pushing digital retaliation from nuisance-level…
By – Samuel Lopez
Hormuz Shock Hits U.S. Legal And Insurance Sectors As War Risk, Cargo Claims And Contract Fights Begin to Spread
By Samuel A. Lopez | USA Herald – The developing Strait of Hormuz crisis is no longer just an energy-market…
By – Samuel Lopez
Beyond Gas Prices The Strait of Hormuz Crisis Could Hit Fertilizer, Plastics, Aluminum And Global Supply Chains
By Samuel Lopez | USA Herald – Right now, most Americans hearing about the Strait of Hormuz are thinking about…
By – Samuel Lopez
Fani Willis Blocked From Trump Fee Fight As Georgia Judge Lets $16.8 Million Reimbursement Battle Move Forward
INSIDE THIS REPORT A Georgia judge has ruled that Fulton County District Attorney Fani Willis cannot re-enter the collapsed Trump…
By – Samuel Lopez
Cumulus Media Files for Chapter 11 as Radio Giant Moves to Cut Massive Debt
In a dramatic turn for one of America’s largest radio broadcasters, Cumulus Media has filed for bankruptcy protection, seeking a…
By – Rihem Akkouche
Gordie Howe Bridge Tolls Revealed Ahead of Spring Opening
The long-awaited Gordie Howe International Bridge is inching closer to welcoming travelers, and officials have finally unveiled a key piece…
By – Rihem Akkouche
Nasa Satellite to Crash to Earth as Spacecraft Re-enters Atmosphere
A Nasa satellite to crash to Earth has prompted warnings from space officials, who say debris from the aging spacecraft…
By – Rachel Moore
Lux Aeterna $10M Seed Funding Fuels Ambitious Reusable Satellite Vision
A Colorado startup aiming to change how satellites operate — and survive — in space has secured fresh investment to…
By – Rachel Moore
Jupiter’s Shift Direction Lights Up the Night Sky Again
Skywatchers may notice something unusual unfolding overhead this week as Jupiter’s shift direction brings an end to months of celestial…
By – Rachel Moore
Google and Tesla Power Grid Initiative Targets Lower Energy Costs
Two of the world’s most influential technology companies are stepping into the energy policy arena, launching a campaign they say…
By – Rachel Moore
Trump’s Laser Talk Sparks New Questions About America’s Secret Arsenal
President Donald Trump has once again done what he often does best in moments of war and tension: he dropped…
By – Samuel Lopez
The Northern Lights Return
The Northern Lights have a chance to be visible from several northern U.S. states on Tuesday night, forecasters at the…
By – Jackie Allen
February Unemployment Up as Job Losses Surprise Economists
February Unemployment Up as the latest labor market data revealed weaker-than-expected job growth and a slight increase in the national…
By – Jackie Allen
Late-Night Attack by Venezuelan National at Florida Beach
A Late-night attack by a Venezuelan National has left a Florida community shaken after authorities say a 26-year-old man ambushed…
By – Jackie Allen
Trump’s War in Iran: Congress Confronts Escalation After U.S. Strikes
Trump’s War in Iran was triggered open conflict, casualties, and renewed constitutional debate in Washington. The crisis intensified following reports…
By – Jackie Allen
U.S. And Israel Launch Major Strikes On Iran — What It Means For America
TEHRAN, Iran – In a dramatic escalation of global tensions, the United States and Israel launched coordinated military strikes against Iran…
By – Samuel Lopez
Fani Willis Blocked From Trump Fee Fight As Georgia Judge Lets $16.8 Million Reimbursement Battle Move Forward
INSIDE THIS REPORT A Georgia judge has ruled that Fulton County District Attorney Fani Willis cannot re-enter the collapsed Trump…
By – Samuel Lopez
FBI Bulletin Raises Troubling Questions About California’s Readiness
[USA HERALD] – A leaked FBI bulletin has now forced an uncomfortable question into the open along California’s coast. If…
By – Samuel Lopez
Google and Tesla Power Grid Initiative Targets Lower Energy Costs
Two of the world’s most influential technology companies are stepping into the energy policy arena, launching a campaign they say…
By – Rachel Moore
Medtronic to Buy Scientia Vascular in $550 Million Neurovascular Deal
In a move poised to reshape the future of stroke treatment technology, Medtronic to buy Scientia Vascular marks a major…
By – Rachel Moore
Winklevoss Twins’ Bitcoin Transfer Sparks Market Speculation
A wave of cryptocurrency movement tied to the founders of the Gemini exchange is drawing fresh attention across the digital…
By – Rihem Akkouche
Alabama Man Fatal Shooting Death Sentence Commuted by Governor
In a rare act of clemency that halted an imminent execution, the Alabama man fatal shooting death sentence tied to…
By – Rihem Akkouche
When The Files Are Finally Unsealed The Most Mind-Bending Truth May Not Be What We Expect
[USA HERALD] – There is a widespread assumption that if governments release their most highly classified files related to unidentified…
By – Samuel Lopez
Civil Rights Icon Rev. Jesse Jackson Dies at 84 As President Trump Issues Personal Tribute
[USA HERALD] — The Rev. Jesse Jackson, a towering figure of the American civil rights movement whose career spanned more than…
By – Samuel Lopez
Clues to Savannah Guthrie Missing Mom’s Disappearance Found on Security System
The disappearance of the mother of Savannah Guthrie has taken a dramatic turn as investigators focus on digital clues tied…
By – Jackie Allen
Mike Tyson Urges Americans to ‘Eat Real Food’ in Emotional Super Bowl Ad Highlighting Health Risks
Boxing legend Mike Tyson is using his platform ahead of Super Bowl 60 to address a personal and national health…
By – Tyler Brooks
Deadly “Death Cap” Mushrooms in California Cause Multiple Deaths and Liver Transplants Amid Rare Super Bloom
California health officials are warning the public after four deaths and three liver transplants linked to the highly toxic death…
By – Ahmed Boughalleb
From Migraines to Miracles: How Becca Valle Survived a Glioblastoma Diagnosis Against the Odds
Becca Valle, 41, thought her headaches were just migraines—until a sudden, unbearable pain revealed something far more serious. In September…
By – Tyler Brooks
Cadillac Names Inaugural Formula 1 Car MAC-26 in Tribute to Mario Andretti Ahead of 2026 Australian Grand Prix Debut
Cadillac has officially revealed the name of its first Formula 1 challenger, confirming that its 2026 car will be called…
By – Ahmed Boughalleb
Norway Tops Medal Table After Day 13 at 2026 Winter Olympics as Team USA Surges Into Second Place
With 13 days complete at the 2026 Milan Cortina Winter Olympics, Norway sits atop the overall medal standings, collecting 34…
By – Ahmed Boughalleb
Olympic Science Explained: How Figure Skaters Spin at Blinding Speeds Without Getting Dizzy
When Amber Glenn finishes her routine, the arena usually rises with her. The music builds, her blades carve a tight…
By – Tyler Brooks
Olympic Villages Run Out of Condoms at 2026 Milan-Cortina Games
Condom supplies in the Olympic Villages at the 2026 Winter Games have been temporarily depleted, the Milan-Cortina organizing committee confirmed,…
By – Tyler Brooks
Arizona Authorities Escalate Search for Savannah Guthrie’s Mom to a Criminal Investigation
In Arizona, police are intensifying their investigation into the disappearance of Nancy Guthrie, Savannah Guthrie’s Mom. The 84-year-old mother of…
By – Jackie AllenAs conversations around sexuality continue to expand, so does the language we use to describe it. Sexuality terms are gaining…
By – Jackie AllenNo posts found.
No posts found.
No comments yet. Be the first to comment!