Gemini News Archive


The first Earth-sized exoplanet orbiting within the habitable zone of another star has been confirmed by observations with both the W. M. Keck Observatory and the Gemini Observatory.

First Potentially Habitable Earth-sized Planet Confirmed

Sakurai’s Object: Stellar Evolution in Real Time

Using the Altair adaptive optics (AO) system with the Gemini North telescope on Mauna Kea in Hawai’i to compensate for distortions to starlight caused by the Earth’s atmosphere, two NOAO astronomers were able to observe the shell of escaping material around Sakurai’s Object (V4334 Sgr).

Sakurai’s Object: Stellar Evolution in Real Time

Limits on Binarity of Exoplanet Host Stars

New research by Stephen Kane (San Francisco State University) and collaborators shows that planets on highly eccentric (very non-circular) orbits are not necessarily explained by the presence of an additional star still present in the system. The Differential Speckle Survey Instrument (DSSI) on the Gemini North telescope was used in this research.

Limits on Binarity of Exoplanet Host Stars

Gemini North Back On-sky: Dome Repairs Complete

Gemini North completed dome shutter system repairs and is back on-sky.

Gemini North Back On-sky: Dome Repairs Complete

Gemini Planet Imager First Light!

Gemini Planet Imager (GPI) was designed, built, and optimized for imaging faint planets next to bright stars and probing their atmospheres. It will also be a powerful tool for studying dusty, planet-forming disks around young stars. It is the most advanced such instrument to be deployed on the 8-meter Gemini South telescope in Chile.

Gemini Planet Imager First Light!


Gemini observations support an unexpected discovery in the galaxy Messier 101. A relatively small black hole (20-30 times the mass of our Sun) can sustain a hugely voracious appetite while consuming material in an efficient and tidy manner – something previously thought impossible.

Fast, Furious, Refined: Smaller Black Holes Can Eat Plenty

Gemini Planet Imager Begins On-sky Integration at Gemini South

Gemini's powerful new instrument for studying planets beyond the Solar System, the Gemini Planet Imager (GPI), has successfully received its first starlight for engineering and testing on the night of November 11-12.

Gemini Planet Imager Begins On-sky Integration at Gemini South

Bringing the Universe Down-to-Earth in Chile

Gemini’s flagship local outreach program in Chile, Viaje al Universo, blasted off early last week when Gemini South’s Nancy Levenson addressed nearly 800 students at Colegio San Joaquin.

Bringing the Universe Down-to-Earth in Chile

Gemini Confirms Lonely Planet Floating in Space

Observations using the Gemini Near-Infrared Imager (GNIRS) at the Gemini North telescope have confirmed one of the lowest mass free-floating planet known, perhaps the very lowest.

Gemini Confirms Lonely Planet Floating in Space

The Gemini Planet Imager Arrives

The Gemini Planet Imager (GPI) is fully assembled in the Gemini South instrument lab and begins tesing and integration.

First Published Science Result from GeMS: “Young Stars Leave the Nest”

The first refereed science paper based on data from the Gemini Multi-conjugate adaptive optics System (GeMS) demonstrates the effective use of young, lower mass stars to determine the age of a star cluster.


“Celestial Pollution” from meteors like this weekend’s Perseid Meteor Shower sprinkle sodium high up in our atmosphere and give astronomers what they need to see the universe in much greater detail.

Poised for Discovery: Gemini’s Much-anticipated Infrared Instrument Goes On-sky

Gemini Observatory’s latest instrument, a powerful infrared camera and spectrograph called FLAMINGOS-2 at Gemini South, reveals its potential in a series of striking on-sky commissioning images released today.

Gamma-Ray Burst Illuminates Galaxy in Dark Ages

Gemini observatory’s rapid-response allows for the detailed study of light from one of the most distant cases of a gamma-ray burst (GRB 130606A) illuminating a galaxy ever observed.

Revolutionary Instrument Delivers a Sharper Universe to Astronomers

A unique new instrument, called GeMS, at Gemini South in Chile takes the removal of atmospheric distortions (using adaptive optics technology) to a new level. Today’s release of seven ultrasharp, large-field images from the instrument’s first science observations demonstrate its remarkable discovery potential.

Gas-Giant Exoplanets Cling Close to Their Parent Stars

Gemini Observatory’s Planet-Finding Campaign finds that, around many types of stars, distant gas-giant planets are rare and prefer to cling close to their parent stars. The impact on theories of planetary formation could be significant.

Gemini Observatory Captures Comet ISON Hurtling Toward Uncertain Destiny with the Sun

A new series of images from Gemini Observatory shows Comet C/2012 S1 (ISON) racing toward an uncomfortably close rendezvous with the Sun. In late November the comet could present a stunning sight in the twilight sky and remain easily visible into early December of this year.

Gemini Arrives Early to the Scene of “Shockingly Bright” Gamma-ray Burst

Captured within 90 minutes of detection by both Fermi’s Gamma-ray Burst Monitor (GBM) and NASA’s Swift satellite, Gemini’s spectrum of the GRB 130427A surrendered a critical parameter: its distance, using Gemini’s rapid response Target of Opportunity protocols.

Now Quarterly, April Issue of GeminiFocus Available

The Gemini Observatory newsletter, GeminiFocus, is now quarterly and available as both a downloadable PDF and in an on-line e-reader format compatible with desktop browsers, tablets, e-readers, and smart phones.