Astronomy News 15 December 2025

Night Sky Tonight (Dec. 18, 2025): Watch Interstellar Comet 3I/ATLAS Live, Plus Moon–Mercury Dawn Pairing, Jupiter and Aurora Chances

Dec. 18, 2025 — If you’re planning to look up tonight, the sky has a rare mix of “big news” and easy wins. The headline event is an interstellar visitor—Comet 3I/ATLAS—making its closest pass by Earth (and getting a free livestream).

18 December 2025

Astronomy·Comets·Night Sky·Stargazing

The Role of Starlink in Scientific Research: How SpaceX’s Satellite Internet Is Transforming Field Science, Earth Observation, and Space Missions—While Challenging Astronomy

Starlink—the low Earth orbit (LEO) satellite internet network built by SpaceX—was designed to solve a commercial problem: fast, low-latency connectivity anywhere on Earth. But as the constellation has scaled into the thousands of satellites and millions of users, it has

18 December 2025

Astronomy·Satellite Internet·Space Technology

Interstellar Comet 3I/ATLAS Today: Latest Dec. 17, 2025 Updates Ahead of Its Dec. 19 Earth Flyby

Two days before it reaches its closest point to Earth, interstellar comet 3I/ATLAS is giving astronomers and serious backyard skywatchers a rare, time-limited opportunity: observe a visitor that formed around another star, then wandered into our solar system on a one-way trip

18 December 2025

Astronomy·Comets·Science News·Space Exploration

Comet 3I/ATLAS Today: Latest News, Science Updates, and How to See the Rare Interstellar Comet Before Its Dec. 19, 2025 Flyby

Updated Wednesday, Dec. 17, 2025 — Interstellar comet 3I/ATLAS (also referenced as C/2025 N1 (ATLAS)) is now just two days from its closest approach to Earth, and today’s coverage spans everything from practical skywatching advice to fresh scientific analysis of the comet’s “non‑gravitational” motion. Space On Friday,

17 December 2025

Astronomy·Interstellar Objects·Skywatching

Night Sky Tonight December 17, 2025: Moon Phase, Planets, Meteor Showers and Today’s Space News

If you’ve been waiting for a truly dark December evening to step outside and let your eyes drink in the stars, tonight is one of the best opportunities of the month. The Moon is in a very thin waning crescent

17 December 2025

Astronomy·Night Sky·Space News

Rocket Launches Today (Dec. 16, 2025): Amazon Leo’s Atlas V Liftoff, China’s Ziyuan Mapping Satellite, and the Next 48 Hours in Spaceflight

Tuesday, December 16, 2025 delivered a classic “modern spaceflight” mix: a broadband-constellation push from Florida, a high-resolution Earth-observation mission from China, and a scrubbed smallsat launch attempt that underscores how tightly packed — and technically unforgiving — today’s global launch

16 December 2025

Astronomy·Rocket Launches·Satellite Technology·Science News

Night Sky Tonight (December 16, 2025): What to See After Dark — Meteors, Planets, an Interstellar Comet, and Aurora Updates

December 16, 2025 is shaping up as a strong night for stargazing—especially if you’ve been waiting for darker skies. The Moon is now a slim waning crescent (about 12% illuminated), which means less moonlight glare and better contrast for meteor-watching, star clusters, and faint

16 December 2025

Astronomy·Meteor Showers·Stargazing

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

Geminids Meteor Shower 2025: The Asteroid Behind Today’s Shooting Stars (Dec. 15 Updates)

On December 15, 2025, the Geminids — often called the year’s most reliable “shooting star” show — are still making headlines around the world. While peak activity has largely passed, late-season Geminid meteors are continuing to streak across dark skies, and

15 December 2025

Astronomy·Meteor Showers·Night Sky·Science News·Space Events

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

Astronomy News 15 December 2025 - 18 December 2025