Gemini News Archive

New Dwarf Galaxy Discovered near the Andromeda Galaxy

New observations with the Gemini Multi-Object Spectrograph on Gemini North confirm a new dwarf companion to the Andromeda Galaxy.

Trans-Neptunian Binaries and the History of the Outer Solar System

An international team of astronomers, using data from the Gemini North telescope, are revealing the history of the outer Solar System by measuring the mutual orbits of extremely widely separated binaries located beyond Neptune in the icy Kuiper Belt.

Viaje al Universo and AstroDay Chile 2011 - Building Anticipation for 2012 and Beyond

Thanks to a partnership between Gemini South and the Extension Department of the University of La Serena as well as participation by the Municipality of La Serena and the Tourism Board (SERNATUR), the Viaje al Universo and AstroDay Chile programs introduced our Chilean host communities to Gemini (and astronomy) in exciting new ways.

A Yellow Supergiant Progenitor of a Massive Star Supernova in M51

Another supernova (SN 2011dh) has exploded in the Whirlpool Galaxy (M51), and now astronomers have identified its unusual progenitor using data from Gemini NIRI.

Gemini Image Captures Elegant Beauty of Planetary Nebula Discovered by Amateur Astronomer

The image of Kronberger 61, discovered by Austrian amateur astronomer Matthias Kronberger, is featured at an International Astronomical Union symposium on planetary nebulae this week in Spain’s Canary Islands. The research team’s work features a striking image of the new nebula obtained with the Gemini Observatory.


An international team of astronomers discovered the most distant known supermassive black hole, seen as a luminous quasar caused by gas falling into the black hole.

GeMS First Light: A New Generation of Adaptive Optics Begins

In early April 2011, after more than a decade of effort, the Gemini Multi-Conjugate Adaptive Optics System (GeMS) saw starlight for the first time. 

Celestial Fireworks Flare as Massive Black Hole Consumes Star in Distant Galaxy

An international team of astronomers using the Gemini North telescope revealed that a powerful outburst of radiation originated from a massive black hole at the center of a distant galaxy.

Eclipsing Stellar Embers Offer Glimpse of Binary Demise

The chance alignment of a pair of helium white dwarfs – both originally about the mass of the Sun – is showing how binary stars interact and eventually suffer a long slow demise.


A unique set of images from the Gemini North telescope in Hawai‘i allowed the researchers to estimate the distance of a GRB with a relatively high degree of certainty, placing it near the edge of the observable universe.

Gemini Images a Psychedelic Stellar Nursery

Two astronomers used the Gemini South telescope in Chile to obtain a dramatic new image of the nursery that could be described as psychedelic.

Identifying Cool Brown Dwarfs With GNIRS

Spectroscopy obtained with the Gemini Near-Infrared Spectrograph (GNIRS) on the Gemini North telescope combined with photometry from the Spitzer Space Telescope enable the identification of a late-type brwon dwarf's spectral type as T8.5.

Australian Students Capture Dancing Galaxies

High school students from across Australia joined in a competition to obtain scientifically useful (and aesthetically pleasing) images using the Gemini Observatory. The winning image is an interacting galaxy pair NGC 6872 and IC 4970.

Journey Through the Universe – Seven Years of Exploration

Seven years ago, Gemini Observatory began a modest program in our local Big Island community called Journey Through the Universe (JTtU).


For the first time, observations with the Gemini Observatory clearly reveal an extreme, large-scale galactic outflow that brings the cosmic dinner to a halt.

AstroDay Chile and Journey through the Universe in La Serena

AstroDay Chile, which started as a mere handful of booths and kiosks from AURA observatories in 2005, has grown to host more than 17 institutions from Chile and beyond. 

Gemini South Shines First Sodium Laser “Constellation”

A new era in high-resolution astronomy began with the successful propagation of a 5-star sodium laser guide star "constellation" in the skies over Cerro Pachon in Chile.

2009 Collision with Jupiter - On the Rocks

After more than a year of studying the 2009 collision with Jupiter, a team's results indicate that the colliding body was rocky and not an icy comet like the last known collision with Jupiter.

On-sky Laser Propagation at Gemini South!

On the night of January 21-22, 2011 the Gemini South 50-watt laser began on-sky engineering testing and commissioning with its successful propagation into the sky over the summit of Cerro Pachón in Chile.

Astronomers 'Weigh' Heaviest Known Black Hole in our Cosmic Neighborhood

Astronomers have measured the most massive known black hole in our cosmic neighborhood by combining data from a giant telescope in Hawai'i and a smaller telescope in Texas.