Press Releases: Gemini Observatory

21 October 2024: 100 years ago Edwin Hubble discovered decisive evidence that other galaxies existed far beyond the Milky Way. This image, captured by the Gemini North telescope, one half of the International Gemini Observatory, features a portion of the enormous Perseus Cluster, showcasing its ‘island Universes’ in awe-inspiring detail. Observations of these objects continue to shed light not only on their individual characteristics, but also on cosmic mysteries such as dark matter.

25 June 2024: A festive array of bright pinks and blues makes for a remarkable sight in this image captured with the Gemini North telescope, one half of the International Gemini Observatory. Resembling a cloud of cosmic confetti, this image is being released in celebration of Gemini North’s 25th anniversary. NGC 4449 is a prime example of starburst activity caused by the interacting and mingling of galaxies as it slowly absorbs its smaller galactic neighbors.

17 June 2024: With the help of the powerful GNIRS instrument on the Gemini North telescope, one half of the International Gemini Observatory, supported in part by the U.S. National Science Foundation and operated by NSF NOIRLab, a team of astronomers have discovered a double-record-breaking pair of quasars. Not only are they the most distant pair of merging quasars ever found, but also the only pair confirmed in the bygone era of the Universe’s earliest formation.

29 April 2024: Using the Gemini South telescope a team of astronomers have confirmed for the first time that differences in binary stars’ composition can originate from chemical variations in the cloud of stellar material from which they formed. The results help explain why stars born from the same molecular cloud can possess different chemical composition and host different planetary systems, as well as pose challenges to current stellar and planet formation models.

29 February 2024: Using archival data from the Gemini North telescope, a team of astronomers have measured the heaviest pair of supermassive black holes ever found. The merging of two supermassive black holes is a phenomenon that has long been predicted, though never observed. This massive pair gives clues as to why such an event seems so unlikely in the Universe.

29 January 2024: Journey Through the Universe — a partnership between the International Gemini Observatory, operated by NSF’s NOIRLab, and the Hawaiʻi Department of Education Hilo-Waiākea Complex Area — celebrates 20 years of cosmic exploration with Hawai‘i students and the community. This year’s exciting program includes classroom presentations, career panels, public events and more!

25 January 2024: The lenticular galaxy NGC 4753, captured by the Gemini South telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, is a truly remarkable object. Its prominent and complex network of dust lanes that twist around its galactic nucleus define its ‘peculiar’ classification and are the likely result of a galactic merger with a nearby dwarf galaxy about 1.3 billion years ago.

14 December 2023: Big Astronomy: People, Places, Discoveries is an award-winning bilingual planetarium show that takes viewers beyond the dome to behind the scenes of some of Chile’s world-class observatories. Meet the people who work with state-of-the-art telescopes in this feature film that is now free and available online for direct download.

27 November 2023: Through its Environmental Sustainability Program, NSF's NOIRLab will reduce its entire annual carbon footprint by 50% by the end of 2027. This will be achieved through allocations of supplemental funding from the National Science Foundation towards installing solar panels and batteries at Gemini South and Vera C. Rubin Observatory in Chile as well as other upgrades at both NOIRLab’s Base and Summit facilities.

13 November 2023: Gemini North, one half of the International Gemini Observatory operated by NSF’s NOIRLab, is now peering deeper into the dusty dwellings of young stars with its new IGRINS-2 instrument. This next-generation spectrograph is an upgraded version of the high-demand visiting instrument IGRINS on Gemini South that will expand our understanding of cosmic objects shrouded by dust and gas.

8 November 2023: Astronomers using the Gemini North telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, have captured the eroding remains of more than 100 dwarf galaxies as they transition into ultra-compact dwarf galaxies, objects with masses much greater than star clusters yet much smaller than dwarf galaxies. These findings confirm that many ultra-compact dwarf galaxies are likely the fossil remains of normal dwarf galaxies that have been stripped of their outer layers.

25 October 2023: Gemini South, one half of the International Gemini Observatory operated by NSF’s NOIRLab, captures the billion-year-old aftermath of a spiral galaxy collision. At the heart of this chaotic interaction, entwined and caught in the midst of the chaos, is a pair of supermassive black holes — the nearest pair to Earth ever recorded.

5 October 2023: Using data from Gemini South and other observatories, astronomers have found a new Luminous Fast Blue Optical Transient (LFBOT), a powerful but poorly understood type of cosmic explosion. However, rather than being nestled in a star-forming galaxy like other LFBOTs discovered so far, the latest event, dubbed ‘the Finch’, occurred in the far outskirts of a galaxy. This observation calls into question leading ideas about the origins of these transient events.

13 July 2023: A billowing pair of nearly symmetrical loops of dust and gas mark the death throes of an ancient red-giant star, as captured by Gemini South, one half of the International Gemini Observatory, operated by NSF’s NOIRLab. The resulting structure, said to resemble an old style of English jug, is a rarely seen bipolar reflection nebula. Evidence suggests that this object formed by the interactions between the dying red giant and a now-shredded companion star.

22 June 2023: Astronomers studying a powerful gamma-ray burst (GRB) with the Gemini South telescope, operated by NSF’s NOIRLab, may have detected a never-before-seen way to destroy a star. Unlike most GRBs, which are caused by exploding massive stars or the chance mergers of neutron stars, astronomers have concluded that this GRB came instead from the collision of stars or stellar remnants in the jam-packed environment surrounding a supermassive black hole at the core of an ancient galaxy.

14 June 2023: Astronomers using the Gemini North telescope, one half of the International Gemini Observatory operated by NSF’s NOIRLab, have detected multiple rock-forming elements in the atmosphere of a Jupiter-sized exoplanet, WASP-76b. The planet is so perilously close to its host star that rock-forming elements — such as magnesium, calcium, and nickel — become vaporized and dispersed throughout its scorching atmosphere. This intriguing chemical profile provides new insights into the formation of planetary systems, including our own.

9 June 2023: The One Sky Project, led by the ‘Imiloa Astronomy Center and sponsored by the Thirty Meter Telescope, has produced a series of seven short fulldome films and a compiled full-length feature film focusing on cultural and Indigenous astronomy. This international collaboration seeks to build cross-cultural connections and increase understanding of different indigenous perspectives while demonstrating how our one sky connects us all. The films, which received accolades in 2022 and 2023, are now free to download to planetariums around the world.

7 June 2023: Gemini North, part of the International Gemini Observatory operated by NSF’s NOIRLab, is back observing the night sky following the repair and refurbishment of its primary mirror. The telescope’s debut observation captured the supernova dubbed SN 2023ixf, which was discovered on 19 May by Japanese astronomer Koichi Itagaki. This dazzling point of light, the closest supernova seen in the past five years, is located along one of the spiral arms of the Pinwheel Galaxy (Messier 101).

3 May 2023: Astronomers using the Gemini South telescope in Chile, operated by NSF’s NOIRLab, have observed the first evidence of a dying Sun-like star engulfing an exoplanet. The “smoking gun” of this event was seen in a long and low-energy outburst from the star — the telltale signature of a planet skimming along a star’s surface. This never-before-seen process may herald the ultimate fate of Earth when our own Sun nears the end of its life in about five billion years.

5 April 2023: Astronomers using an array of ground- and space-based telescopes, including Gemini North on Hawai‘i, have uncovered a closely bound duo of energetic quasars — the hallmark of a pair of merging galaxies — seen when the Universe was only three billion years old. This discovery sheds light on the evolution of galaxies at “cosmic noon,” a period in the history of the Universe when galaxies underwent bursts of furious star formation. This merger also represents a system on the verge of becoming a giant elliptical galaxy.