Comets

Comet 3I/ATLAS Today (Dec. 16, 2025): Interstellar Visitor Nears Closest Approach to Earth on Dec. 19

As of Tuesday, December 16, 2025, the interstellar comet known as 3I/ATLAS—a rare visitor from beyond our solar system—is drawing intense attention ahead of its closest approach to Earth on Friday, Dec. 19. Despite dramatic headlines and online rumors, reputable agencies are consistent

16 December 2025

Astronomy·Comets·Interstellar Objects·Space News

Interstellar Comet 3I/ATLAS Nears Closest Earth Flyby on Dec. 19: New X‑ray Views, UN Tracking, and What Scientists Know Now

December 15, 2025 — A rare visitor from beyond our solar system is making its final, headline-worthy sweep through the inner neighborhood — and the countdown to its closest pass by Earth is nearly over. Interstellar comet 3I/ATLAS (also designated C/2025 N1 (ATLAS)) will

15 December 2025

Astronomy·Comets·Scientific Discoveries·Space Exploration

Night Sky Tonight (Dec. 15, 2025): Geminids Encore, Orion Nebula Peak, and a Rare Interstellar Comet Turns Green

December 15, 2025 brings a near-perfect recipe for skywatchers: long winter nights, a slim waning Moon, and a sky full of headline-worthy targets—plus a rare interstellar visitor that’s suddenly glowing green in new images. With the winter solstice now just days away, the Northern Hemisphere

15 December 2025

Astronomy·Comets·Meteor Showers·Night Sky·Stargazing

Comet 3I/ATLAS Today (Dec. 15, 2025): The Interstellar Visitor Turns Green Ahead of Its Dec. 19 Flyby

On December 15, 2025, the solar system’s most talked-about “visitor” is back in headlines for two very comet-like reasons: it’s brightening and it’s glowing green. The object is Comet 3I/ATLAS—often shortened to “3I/Atlas comet”—the third confirmed interstellar object ever found passing through our neighborhood, after 1I/ʻOumuamua (2017) and 2I/Borisov (2019).

15 December 2025

Astronomy·Comets·Interstellar Objects·Space Exploration

Comet 3I/ATLAS: Green-Glowing Interstellar Visitor Nears Its Closest Earth Pass on Dec. 19, 2025

Updated: December 14, 2025 A rare messenger from another star system is sliding through our solar system right now—and it’s putting on a subtle but scientifically rich show. Comet 3I/ATLAS (also designated C/2025 N1 (ATLAS)) is only the third confirmed interstellar object ever observed inside

14 December 2025

Astronomy·Comets·Interstellar Objects·Night Sky·Space News

Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

On December 13, 2025, Comet 3I/ATLAS—the third confirmed interstellar object ever found crossing our solar system—is back in the headlines as astronomers release fresh observations that deepen the mystery (and the science) of this rare cosmic flyby. It’s not just

13 December 2025

Astronomy·Comets·Scientific Discoveries·Space Exploration

Comet 3I/ATLAS Update (Dec. 12, 2025): First X‑Ray View, Green Glow, and How to Spot the Interstellar Visitor

On December 12, 2025, the rare interstellar comet 3I/ATLAS (also written 3I/Atlas) is back in headlines for two reasons: a newly released X‑ray view from ESA’s XMM‑Newton and fresh Gemini North telescope images showing the comet looking noticeably greener—all as the object heads toward its closest approach to

13 December 2025

Astronomy·Comets·Night Sky·Science News·Space Exploration

Interstellar Comet 3I/ATLAS Lights Up December Skies: X‑Ray Glow, Life‑Building Molecules and How to Watch the December 19 Flyby

As of 11 December 2025, interstellar comet 3I/ATLAS has turned into the most closely watched object in the night sky — and not just by astronomers. In the last few days we’ve had: At the same time, a swirl of

11 December 2025

Astronomy·Comets·Skywatching·Space Exploration

NASA’s Interstellar Comet 3I/ATLAS: New Images, Life’s Ingredients and What Comes Next After the December Flyby

As of December 10, 2025, NASA and partner observatories are racing to squeeze every last photon out of interstellar comet 3I/ATLAS — a green-glowing, ice‑volcano‑blasting visitor loaded with the chemical “ingredients for life.” Here’s the latest on what we’ve learned

10 December 2025

Astronomy·Comets·NASA·Scientific Discoveries·Space Exploration

Interstellar Comet 3I/ATLAS Glows in X-Rays and Life‑Building Molecules as Earth Flyby Nearby

As of December 10, 2025, a rare interstellar comet is putting on a quiet but scientifically spectacular show across the solar system — from X‑rays to organic chemistry. A Once‑in‑a‑Lifetime Visitor From Another Star Interstellar comet 3I/ATLAS , also cataloged

10 December 2025

Astronomy·Comets·Science News·Space Exploration

Interstellar Comet 3I/ATLAS Nears December 19 Flyby: New Hubble Photos, First X‑Rays and How to See It Today

On December 9, 2025, interstellar comet 3I/ATLAS (also known as C/2025 N1 (ATLAS)) is racing through the inner solar system, just 10 days away from its closest approach to Earth. Today’s wave of new images and data — from Hubble, ESA’s JUICE spacecraft, Japan’s XRISM X‑ray observatory, ALMA, and both

9 December 2025

Astronomy·Comets·Skywatching·Space Exploration

Interstellar Comet 3I/ATLAS Today (December 8, 2025): Latest NASA Images, ‘Serial Killer’ Debate and How to See the Visitor from Another Star

On December 8, 2025, interstellar comet 3I/ATLAS is racing through the inner solar system, past the Sun and on its way to a safe but scientifically thrilling flyby of Earth on December 19. In the last 24–48 hours, new Hubble photos, Mars-orbiter results,

9 December 2025

Astronomy·Comets·NASA News·Space Exploration·Stargazing

Comets News 9 December 2025 - 16 December 2025