Comets News 25 December 2025

Europa Clipper’s UV look at Comet 3I/ATLAS backs water-ice call as radio “technosignature” scan finds none

WASHINGTON, January 7, 2026, 14:24 (EST) NASA’s Europa Clipper spacecraft caught interstellar comet 3I/ATLAS in ultraviolet light while the object was hidden from Earth-based and near-Earth observatories, the SETI Institute said on Tuesday. It detected hydrogen and oxygen in the

7 January 2026

Comets·Space Exploration

Alien-signal hunt finds nothing from interstellar comet 3I/ATLAS after Green Bank scan

NEW YORK, Jan 5, 2026, 04:15 ET A search for possible technosignatures — potential signs of advanced technology — in the interstellar comet 3I/ATLAS found no credible radio transmissions, Breakthrough Listen researchers reported. The team said its campaign detected no

5 January 2026

Astronomy·Comets·Space Exploration

Interstellar comet 3I/ATLAS vents water after Sun swing-by as radio search finds no signals

NEW YORK, January 4, 2026, 18:22 ET Scientists tracking interstellar comet 3I/ATLAS with a Sun-watching spacecraft have estimated how quickly it shed water after its late-October pass around the Sun, before activity eased as it moved outward. A separate radio

5 January 2026

Astronomy·Comets·Science News·Space Exploration

SOHO spots water gushing from interstellar comet 3I/ATLAS after its Sun pass

NEW YORK, January 4, 2026, 17:01 ET Scientists have measured water streaming from interstellar comet 3I/ATLAS after its late-October pass around the Sun, using a solar-monitoring spacecraft to estimate how fast the object was shedding ice into space. Phys The

4 January 2026

Astronomy·Comets·Scientific Discoveries·Space News

Scientists Scanned Interstellar Comet 3I/ATLAS for Alien Signals — and Found Nothing

NEW YORK, January 4, 2026, 05:41 ET Scientists hunting for signs of alien technology from interstellar comet 3I/ATLAS reported no radio signals that could be traced to the object, after aiming one of the world’s most sensitive dishes at it

4 January 2026

Astronomy·Comets·Space Exploration

Green Bank Telescope schedules fresh scan of interstellar Comet 3I/ATLAS as it heads out

NEW YORK, January 3, 2026, 10:19 ET The Green Bank Telescope in West Virginia scheduled a six-hour “chemical survey” of interstellar comet 3I/ATLAS early on Saturday, according to the facility’s public observing schedule. The slot ran from 01:30 to 07:00

3 January 2026

Astronomy·Comets·Science News·Space Exploration

Hubble spots odd triple jets on interstellar comet 3I/ATLAS as radio search finds no alien signal

NEW YORK, January 2, 2026, 13:44 ET Harvard astrophysicist Avi Loeb said newly analyzed Hubble Space Telescope images show three evenly spaced jets on interstellar comet 3I/ATLAS, adding fresh intrigue to a rare visitor now leaving the solar system. The

2 January 2026

Astronomy·Comets·Space Exploration

Interstellar comet 3I/ATLAS spills its secrets as scientists clock its water loss and radio silence

NEW YORK, January 2, 2026, 12:50 ET Astronomers have measured water streaming from interstellar comet 3I/ATLAS after it passed closest to the Sun, using ultraviolet observations that track hydrogen released as water breaks apart, a report published on Friday said.

2 January 2026

Astronomy·Comets·Scientific Discoveries·Space Exploration

No alien signal: most sensitive radio scan of interstellar comet 3I/ATLAS comes up empty

NEW YORK, January 1, 2026, 14:44 ET The most sensitive radio search yet for signs of extraterrestrial technology from interstellar comet 3I/ATLAS has found none, researchers reported this week. The result matters because 3I/ATLAS is a rare visitor — only

1 January 2026

Astronomy·Comets·Space Exploration

Hubble’s new 3I/ATLAS data show twin jets as rare interstellar comet fades

NEW YORK, December 29, 2025, 06:44 ET NASA’s Hubble Space Telescope has carried out a new observation of interstellar comet 3I/ATLAS, with the Space Telescope Science Institute’s status report showing a Dec. 27 visit now archived. (STScI visit status report)

29 December 2025

Astronomy·Comets·Scientific Discoveries·Space Exploration

Comet 3I/ATLAS Today (Dec. 26, 2025): Wobbling Jets Detected in a Rare Sun-Facing Tail as the Interstellar Visitor Departs

Dec. 26, 2025 — Comet 3I/ATLAS is already on its way out of our neighborhood, but it’s still managing to surprise astronomers on the way to the cosmic exit ramp. Today’s coverage centers on a fresh scientific twist: researchers have

26 December 2025

Astronomy·Comets·Interstellar Objects·Space Exploration

Comet 3I/ATLAS Today (Dec. 25, 2025): Latest Updates, Skywatching Forecast, and What Scientists Expect Next

On December 25, 2025, Comet 3I/ATLAS is already on its way out—yet it remains one of the most intensively monitored visitors of the year. After making its closest approach to Earth on Dec. 19, the rare interstellar comet continues to

25 December 2025

Astronomy·Comets·Skywatching·Space News

Comets News 25 December 2025 - 7 January 2026