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Scientific Discoveries News 4 October 2025 - 13 November 2025

Alien Probe or Cosmic Relic? Interstellar Comet 3I/ATLAS Baffles Scientists (updated 27.10.2025)

3I/ATLAS Today (Nov. 13, 2025): Interstellar comet’s tail keeps growing, ‘radio signal’ confirmed natural, and a different ATLAS comet fragments

Published Thursday, November 13, 2025 Fresh observations today keep 3I/ATLAS—the third confirmed interstellar object—firmly in the “strange but natural comet” camp. Meanwhile, a different ATLAS‑discovered comet in our solar system, C/2025 K1 (ATLAS), is visibly fragmenting. Here’s what changed today, what didn’t, and how to tell these two “ATLAS comets” apart. ScienceAlert+2NASA Science+2 What’s new today (Nov. 13) The science behind the week’s biggest talking points The “radio signal” explained.MeerKAT detected OH absorption at the familiar radio frequencies used to trace water loss in comets. That’s direct evidence that 3I/ATLAS is venting water as it warms—exactly what a coma should
13 November 2025
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Interstellar Comet 3I/ATLAS: A Visitor from Beyond the Solar System

MeerKAT Detects Radio Signal From Interstellar Comet 3I/ATLAS — OH Lines Confirm Natural Origin (Nov. 13, 2025)

Dateline: Nov. 13, 2025 South Africa’s MeerKAT radio array has picked up the first confirmed radio signal from the interstellar comet 3I/ATLAS, a detection that strongly supports the object’s natural, cometary identity and undercuts recent “alien probe” speculation. The signal—two narrow features at 1665 and 1667 MHz—matches classic hydroxyl (OH) absorption produced when sunlight breaks apart water vapor outgassed from a warming comet. The Astronomer’s Telegram What astronomers actually detected The team reported OH absorption in both the 1665 MHz and 1667 MHz lines while observing 3I/ATLAS on Oct. 24, 2025, when the comet sat just 3.76° from the Sun
13 November 2025
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Alien Probe or Cosmic Relic? Interstellar Comet 3I/ATLAS Baffles Scientists (updated 27.10.2025)

Comet 3I/ATLAS on Nov. 12, 2025: Tail Keeps Growing, First Radio Signal Confirmed, and How to See the Interstellar Visitor

Published: 12 November 2025 The interstellar comet 3I/ATLAS is putting on fresh science today. New images show its ion tail lengthening and sharpening as the object climbs back into our predawn sky after its late‑October swing around the Sun. Meanwhile, astronomers have confirmed the first radio detection from this visitor—evidence of ordinary comet chemistry rather than extraterrestrial tech. Here’s what’s new, why it matters, and how to spot it. Space+1 Today’s key updates What the new images show Today’s coverage features a crisp sequence from Nov. 10–11: against moonlit, low‑altitude conditions, 3I/ATLAS displays a brighter nucleus and a longer, well‑defined
12 November 2025
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Alien Probe or Cosmic Relic? Interstellar Comet 3I/ATLAS Baffles Scientists (updated 27.10.2025)

Third Interstellar Comet 3I/ATLAS Stuns Scientists With Surprising Brightening and Blue Glow

Discovery and Interstellar Identity Comet 3I/ATLAS (officially Interstellar Comet 3I/ATLAS) was first spotted on July 1, 2025, by the NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) telescope in Río Hurtado, Chile newsweek.com. Right away, its orbit stood out as hyperbolic, meaning it isn’t bound to the Sun by gravity and is just passing through. This identified 3I/ATLAS as an interstellar object – a rare visitor from another star system. It is only the third such interstellar traveler ever detected, after the mysterious cigar-shaped 1I/ʻOumuamua in 2017 and the comet 2I/Borisov in 2019 space.com. The “3I” designation literally means third interstellar,
4 November 2025
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Alien Probe or Cosmic Relic? Interstellar Comet 3I/ATLAS Baffles Scientists (updated 27.10.2025)

Interstellar Comet 3I/ATLAS Stuns Scientists with Surprising Bright Outburst and Ancient Origins

A Visitor From Beyond the Solar System In July 2025, astronomers discovered something extraordinary: a dim, fuzzy comet hurtling toward the inner solar system on a path not bound to the Sun. Follow-up observations confirmed this object – now named 3I/ATLAS (for the ATLAS survey that found it) – was on a hyperbolic trajectory, meaning it came from interstellar space and would soon depart forever science.nasa.gov en.wikipedia.org. The “3I” designation marks it as the third interstellar object ever observed, after the asteroid-like 1I/ʻOumuamua and comet 2I/Borisov science.nasa.gov. Unlike ʻOumuamua (which was small, oddly shaped, and showed no coma), 3I/ATLAS immediately
4 November 2025
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Interstellar Comet 3I/ATLAS Stuns Scientists – Brightening, Blue Glow & Mystery Acceleration

Interstellar Comet 3I/ATLAS Stuns Scientists – Brightening, Blue Glow & Mystery Acceleration

A Mysterious Visitor from Beyond the Solar System When astronomers spotted a faint new object moving rapidly through the outer solar system in July 2025, they quickly realized it was not an ordinary comet. Its extra-high velocity and open-ended (hyperbolic) trajectory indicated it was an interstellar interloper – an object arriving from far outside the Sun’s domain scientificamerican.com. Officially designated 3I/ATLAS (“I” for interstellar, “3” as the third of its kind, and ATLAS for the survey telescope that found it theguardian.com), this comet has since commanded the full attention of the astronomical community. “We’ve never had an object like this
3 November 2025
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Alien Probe or Cosmic Relic? Interstellar Comet 3I/ATLAS Baffles Scientists (updated 27.10.2025)

Mysterious Interstellar Comet 3I/ATLAS Nears Sun – 10-Billion-Year Visitor Sparks Alien Theories and Scientific Awe

Key Facts and Highlights A Visitor From Beyond the Solar System In July 2025, astronomers spotted a faint newcomer inbound toward the Sun – one that was not gravitationally bound to our star at all. The object, now designated 3I/ATLAS, is only the third interstellar visitor ever detected in our solar system ts2.tech. (The “3I” prefix marks it as the third Interstellar object.) It was first observed on July 1, 2025 by the ATLAS sky-survey telescope in Río Hurtado, Chile, and its discovery immediately caused excitement. The reason? Its orbit was hyperbolic, meaning it’s not a periodic comet from our Oort
29 October 2025
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Rare Interstellar Comet 3I/ATLAS – a 10-Billion-Year-Old Time Capsule – Flies Past Mars

Alien Comet 3I/ATLAS Is Spewing Water Like a Fire Hose — And Scientists Are Stunned

These astounding discoveries come from coordinated observations worldwide. Below we delve into the details: what we’ve learned about 3I/ATLAS, how it compares to other interstellar visitors, and why scientists are so excited. What Is 3I/ATLAS? A Rare Interstellar Comet 3I/ATLAS (sometimes simply called “ATLAS”) is an interstellar comet – a chunk of ice and rock that formed around a distant star and is now speeding through our Solar System on a one-way trip. It was first spotted on July 1, 2025, by the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Chile ts2.tech. Follow-up analyses quickly confirmed its hyperbolic orbit
12 October 2025
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Rare Interstellar Comet 3I/ATLAS – a 10-Billion-Year-Old Time Capsule – Flies Past Mars

Rare Interstellar Comet 3I/ATLAS – a 10-Billion-Year-Old Time Capsule – Flies Past Mars

A Visitor from Beyond the Solar System Humanity has waited a long time to study a comet from another star – and suddenly, within a decade, we’ve had three. 3I/ATLAS (officially 3I/2025 A1) is the latest of these rare interstellar interlopers. It was first detected moving through the outer Solar System in June 2025 with an exceptionally eccentric orbit. Follow-up observations quickly confirmed what its speed and trajectory implied: this object was not bound to the Sun’s gravity ts2.tech. By July 2025, the Minor Planet Center designated it the third interstellar object ever found ts2.tech. Like its predecessors – the cigar-shaped 1I/‘Oumuamua and cometary 2I/Borisov –
8 October 2025
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Blastoff and Breakthroughs: SpaceX Smashes Records, Mars Life Clue, and More (Oct 4–5, 2025)

Blastoff and Breakthroughs: SpaceX Smashes Records, Mars Life Clue, and More (Oct 4–5, 2025)

Key Facts Major Launches and Missions SpaceX’s relentless launch pace hit a new high this weekend. On Oct. 3, a Falcon 9 rocket roared off the pad at Vandenberg Space Force Base carrying 28 Starlink broadband satellites into low Earth orbit space.com. This mission marked SpaceX’s 125th Falcon 9 flight of the year, already a record-setting cadence, and the booster successfully landed on the Of Course I Still Love You droneship ~8 minutes later space.com. The reused booster (serial B1097) completed its second flight space.com. Starlink deployment was confirmed about an hour after liftoff, adding to SpaceX’s ever-growing internet constellation space.com. With over 8,500
5 October 2025
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Rogue Planet Gobbles 6 Billion Tons of Gas per Second — Behaving Like a Star

Rogue Planet Gobbles 6 Billion Tons of Gas per Second — Behaving Like a Star

A Cosmic Feeding Frenzy Astronomers have long known that rogue planets (also called free‑floating planetary‑mass objects) drift through space without a host star sciencealert.com. Most are cold and quiet, but Cha 1107-7626 is anything but quiet. In late June 2025, it suddenly brightened dramatically. Follow-up observations revealed an EXor‑type accretion burst – a rapid feeding episode like those seen in infant stars sciencealert.com. By August, the planet’s accretion rate had skyrocketed: at its peak it was pulling in roughly 6 billion tons of cosmic gas and dust every second phys.org. This translates to about 10⁻⁷ Jupiter masses per year – an unheard‑of rate for any planet sciencealert.com. Víctor Almendros‑Abad, an
4 October 2025
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