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Astronomy News 13 December 2025 - 16 December 2025

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

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

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

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

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

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
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Night Sky December 2025: Geminid Meteor Shower Peak Tonight, Interstellar Comet 3I/ATLAS, and the Best Stargazing Dates

Night Sky December 2025: Geminid Meteor Shower Peak Tonight, Interstellar Comet 3I/ATLAS, and the Best Stargazing Dates

Updated: December 14, 2025 December’s night sky is delivering exactly what skywatchers hope for: long hours of darkness, bright planets, and two headline-grabbing celestial events arriving back-to-back. First, the Geminid meteor shower—often called the year’s most reliable “shooting star” show—peaks across
14 December 2025
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Comet 3I/ATLAS Update (Dec. 13, 2025): New Green Glow, First X‑Ray Views, and What’s Next for the Interstellar Visitor

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

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
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