The International Gemini Observatory is operated by @NSF @NOIRLabAstro. Para español siga a @NOIRLabAstroES. Exploring the Universe, sharing its wonders.
Joined April 2012
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21 Jul 2025
Say it 3 times: Betelgeuse, Betelgeuse, Betelgeuse.
Astronomers using @Geminiobs North found a hidden companion star orbiting inside Betelgeuse’s atmosphere, the first close-in companion ever seen around a supergiant star.
🔗 noirlab.edu/public/news/noir…
📷GeminiObs/NOIRLab/NSF/AURA
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🌌🔶 What’s it like to be a telescope working the night shift?
This timelapse from the @GeminiObs South telescope in Chile follows several hours of observations as the GMOS System sends its laser into the sky.
📹: @GeminiObs /NOIRLab/NSF/AURA/M. Paredes
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🪐 Astronomers found the strongest evidence yet that some exoplanets may have magnetic fields.
Using @Geminiobs North and ESO’s Very Large Telescope, researchers measured winds on 7 ultra-hot giant exoplanets 🔭
🔗ow.ly/kIWI50Z6FX7
📷: @GeminiObs/NOIRLab/NSF/AURA
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May 28
The constellation Gemini is the namesake of the International @GeminiObs, operated by NSF NOIRLab. These twin telescopes in Hawai‘i and Chile give astronomers access to the entire sky.
#GeminiSeason
📷: International Gemini Observatory/NOIRLab/AURA/NSF/A. Hara
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May 25
🛠️❄️ Every couple of years, Flamingos-2 comes down for a little maintenance break.
This instrument at the Gemini South telescope is spending a few weeks in the lab for the replacement of its cryocoolers and checks on components.
📷 @GeminiObs/NOIRLab/NSF/AURA/S. Olivares
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May 12
AstroDay 2026 took over Hilo 🌌✨
Families, students, and astronomy fans gathered at Prince Kuhio Mall with the Maunakea Observatories and local STEM organizations for a day full of space activities, art, and cosmic curiosity.
📷: @GeminiObs/NOIRLab/NSF/AURA
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👀 This image of the week looks like it was taken through a piece of glass, but it was not!
Those glowing vertical streaks in the top right are light pillars, captured by a CloudCam at the @Geminiobs North Telescope.
📷: @GeminiObs/NOIRLab/NSF/AURA/J. Pollard
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Two telescopes, one mission to explore the sky. From Hawai‘i to Chile, the International Gemini Observatory, operated by NSF NOIRLab, can see almost the entire sky.
📷 International Gemini Observatory/NOIRLab/NSF/AURA/Kwon O Chul (Gemini South, on left) P. Horálek (Gemini North)
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Gemini Observatory retweeted
🌋 Watch the latest Kīlauea eruption (Episode 45) captured last week by one of the @GeminiObs summit cameras on Maunakea!
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Apr 23
A rose… in space? 🌹
This is NGC 2040, located about 160,000 light-years away in the constellation of Dorado in the Large Magellanic Cloud.
This image was captured by the @Geminiobs South telescope, operated by NSF NOIRLab.
📷:International Gemini Observatory/NOIRLab/NSF/AURA
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Apr 21
Earlier this month, the Merrie Monarch Festival brought the city of Hilo to life, celebrating hula, culture and tradition.
@GeminiObs joined in the celebration along w/the @MaunakeaObs and marched in the Merrie Monarch Parade through downtown Hilo.
📷 K.Usuda-Sato and L. Lozi
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Apr 14
We found this in the family album 🥹
In January 1998, the Gemini South telescope was just steel and scaffolding on Cerro Pachón in Chile. Gemini South is one half of the International @GeminiObs, operated by NSF NOIRLab.
📷: NOIRLab/NSF/AURA/T. Sebring (SOAR)
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Breakthrough alert! 😲🚨
Researchers just found the first direct evidence that exoplanets inherit rocky-element ratios from their host stars.The data comes from @Geminiobs South, and confirms astrobiologists' long-term suspicions about planet formation.
noirlab.edu/public/news/noir…
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Mar 25
When the night sky steals the spotlight 🌌✨
In this image, the Milky Way stretches across the sky above Gemini South telescope, perched on Cerro Pachón. That bright, glowing core? It’s the heart of our galaxy.
📷: @GeminiObs/NOIRLab/NSF/AURA/H. Stockebrand
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In this timelapse video, @Geminiobs North creates artificial guide stars above Earth. By tracking how those stars shimmer, the telescope’s adaptive optics system adjusts its mirrors to cancel it out in real time.
🎥: NOIRLab/NSF/AURA/T. Matsopoulos
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Feb 16
We’ve got #Olympics spirit at Gemini North, where snow and ice briefly closed the observatory this past week. This 📷 from Maunakea in Hawai’i was taken from the neighboring Canada-France-Hawaii Telescope. #MilanoCortina2026
📷 Canada France Hawaii Telescope Corporation
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Feb 10
Our 22nd Journey Through the Universe Week was a whirlwind of fun! 🤩🔭Mahalo to our 60 Journey Educators and mahalo nui loa to our 100 Hilo-Waiākea teachers who invited us into their classrooms 😍
🔗 bit.ly/4clvQmC
📸 @GeminiObs/NOIRLab/NSF/AURA/J.Pollard
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Jan 28
Comet C/2025 K1 (ATLAS) breaking apart! ☄️
On 11 November and 6 December 2025, the comet soared in the skies above Maunakea, Hawai‘i, where Gemini North captured it in action!
📷 @GeminiObs/NOIRLab/NSF/AURA/B. Bolin
Processing: J. Miller & M. Rodriguez, T.A. Rector, M. Zamani
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Jan 21
For planetary systems, the excitement doesn’t end after they’re formed! Gemini South, ½ of @GeminiObs, just discovered a cloud of metallic winds orbiting a mystery object the size of multiple Jupiters. 🤔
🔗 ow.ly/kZPB50Y0PFN
📸 @GeminiObs/NOIRLab/NSF/AURA/J. da Silva
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Gemini Observatory retweeted
Jan 5
Welcome to day one of #AAS247! Come meet our amazing team and find out what exciting projects we're working on at @GeminiObs, @Cerrotololo, @KittPeakNatObs, CSDC, and @VRubinObs.
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Gemini Observatory retweeted
Jan 3
We're excited to see all of you at #AAS247! For the latest scoop on our science talks, open house, iposters, demos, swag & more - stay tuned with us on @NOIRLabScience! Daily updates coming your way! #Astronomy
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