European
Southern
Observatory
ESO Science Newsletter August 2026
31 Aug 2026

This newsletter is a summary of recent ESO Science Announcement items. Follow the links or visit ESO Science Announcements to read more.



Science Announcements


Xavier Barcons Concludes his Term as Director General

28 Aug 2026:

At the end of his nine years as ESO Director General, Xavier Barcons reflects on ESO’s scientific contributions, international standing, organisational challenges, sustained growth during this period, and exciting perspectives for the future.

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Major New ALMA Science Archive Features

25 Aug 2026:

The ALMA Science Archive has received substantial feature upgrades, some of which have been worked on for years.

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Comparison of Panel Review and Distributed Peer Review at ALMA

25 Aug 2026:

Since 2021, ALMA has used a distributed peer review model instead of traditional panel-based review. In a recent study, John Carpenter and Andrea Corvillon analysed more than 20,000 proposals and over 160,000 individual reviews over 13 ALMA cycles (Cycles 0–12) to examine whether the statistical patterns of proposal evaluation changed. Overall, the study finds that the outcomes of distributed peer review are statistically consistent with those of traditional panel review. You can read a summary of the result on the ALMA website and the paper accepted for publication in PNAS.

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Introducing the 2026 ESO Fellows - Germany and Chile

25 Aug 2026:

The Offices for Science are very pleased to present the 2026 ESO Fellows. Here is an introduction to the Fellows due to start in Garching and Chile later this year.

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ESO Fellowship Programme 2026 / 2027

21 Aug 2026:

ESO's prestigious postdoctoral fellowship programme in both Garching (Germany) and Santiago (Chile) offers outstanding early-career scientists the opportunity to further develop their independent research programmes. From exoplanets to cosmology, observational, theoretical and fundamental astrophysics, these are all areas where ESO Fellows can benefit from a highly dynamic scientific environment, at some of the most advanced ground-based telescopes in the world. Do watch ESOCast 165 to hear what previous ESO fellows have to say about the fellowship programme or watch the virtual tour to ESO's premises from 2020 or 2021 where young scientists could ask questions about the fellowship programme.

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Registration Open for ESO Workshop "Bridging Horizons: Harnessing ESO's Current Facilities for the Dawn of Exoplanet Population Studies", 2-6 November 2026

21 Aug 2026:

Observations with the VLT, VLTI, and ALMA have pioneered exoplanet science over the past decade. With upcoming results from ESA missions such as Gaia, PLATO, and Ariel, exoplanet research is entering a transformative era of population-scale characterisation surveys. This workshop will bring the community together to explore how current ESO facilities, together with powerful archival resources, can best complement exoplanet demographics, atmospheres, and planet formation at the dawn of population-scale studies.

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Fast Track Channel FTC 117A Time Allocation

20 Aug 2026:

The time allocation process for ESO telescopes for the first Fast Track Channel FTC 117A (1 September 2026 - 28 February 2027) has been completed. This was based on the scientific evaluation of the Distributed Peer Review (DPR). A total of 505 hours of Service Mode observations (excluding filler programmes) were allocated on the VLT/VLTI, which is 10% higher than the total time initially reserved for this first FTC call (460 hours). As a reminder, only VLT/VLTI Normal programmes with a maximum time request of 30 hours were offered in FTC 117A.

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Release of SPHERE Data Indicating the Presence of a Companion for Betelgeuse

19 Aug 2026:

Betelgeuse is the most studied Red Super Giant. In 2024, through a reinterpretation of its long secondary period (LSP), a close orbiting stellar companion was suggested to exist, with a maximum elongation in December 2024. The goal was to search for this secondary component.

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First Data Release from the INSPIRING ESO Large Programme

23 Jul 2026:

The first Phase 3 data release from the INSPIRING ESO Large Programme (1103.D-0797) is now available through the ESO Science Archive. This release provides fully reduced and calibrated VLTI/PIONIER observations obtained in the GRISM_H mode for eight post-AGB binary systems. 

The INSPIRING programme uses VLTI observations to study the inner rims of dusty circumbinary discs around post-AGB binaries.

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Upcoming ESO or ESO-related workshops
 

The developments over the past decades in high-resolution and multi-object spectroscopy have enabled transformative insights into stars, stellar systems and populations, our Galaxy, and extrasolar planets. In turn, these have triggered the construction of a new generation of powerful instruments that will characterise fainter and more distant systems with unprecedented detail and/or statistical power, opening new windows in our understanding of the exoplanet population, galactic archaeology, and fundamental physics. This conference will bring together communities working on instrumentation, stellar and exoplanet astrophysics, and chemical evolution, serving as a launchpad for reviewing the scientific landscape, new challenges, and future priorities.

 

Type II supernovae (SNeII) are among the brightest and most common stellar explosions in the Universe, signaling the dramatic final chapters in the lives of many massive stars. These events originate from massive stars—those with initial masses exceeding eight times that of the Sun—that have retained most of their hydrogen-rich envelopes. As these stars reach the end of their life cycles, their iron cores collapse, unleashing a burst of neutrinos and a shock wave that powers the ensuing explosion and its striking luminosity.

This workshop will create a dedicated space to confront such questions through both observational and theoretical perspectives exploring the connections between pre-supernova stellar structure, explosion dynamics, and observable features. The most up-to-date findings using hydrodynamical simulations, radiative transfer modeling, archival or new multi-wavelength observations, light curve and spectral modeling, and machine-learning-based classifications in time-domain surveys will all be welcome contributions. Furthermore, contributions will be targetted that link SNeII to broader astrophysical contexts, such as dust production, galactic feedback, chemical enrichment, and their utility as cosmological distance indicators.

 

Observations with the VLT, VLTI, and ALMA have pioneered exoplanet science over the past decade. With upcoming results from ESA missions such as Gaia, PLATO, and Ariel, exoplanet research is entering a transformative era of large-scale characterisation surveys. This ESO workshop will bring the community together to explore how current ESO facilities together with powerful archival resources, can best complement exoplanet demographics, atmospheres, and planet formation at the dawn of population-scale studies.

 

This workshop will focus mostly on quiescent and non-accreting galactic nuclei. These systems are essential for understanding the full range of nuclear evolutionary pathways, complementary to studies of accreting AGNs. At the same time, new observing facilities provide fresh opportunities: GRAVITY+, operational from 2026, will deliver early high-precision interferometric results on both quiescent galactic nuclei and AGN, extending stellar dynamical studies into regimes not previously accessible. The Vera C. Rubin Observatory (LSST) will begin uncovering large samples of tidal disruption events (TDEs) and other nuclear transients, providing powerful probes of otherwise dormant black holes. Other current and future facilities will add complementary perspectives, broadening the discovery space. 
 
The workshop will therefore provide a timely forum to assess recent progress, present first results from new facilities, and discuss how the scientific focus of this field will develop in the coming decades. 

 

Thermal infrared astronomy is entering a pivotal decade, driven by cutting-edge instrumentation and a growing range of science applications. At ESO, facilities such as MATISSE and VISIR and the newly operational ERIS provide high spatial and spectral resolution that enables detailed studies of protoplanetary disks, exoplanet atmospheres, evolved stars, and obscured galactic nuclei. In parallel, JWST/MIRI is delivering transformative science with unmatched sensitivity from space, highlighting the power of infrared observations. Looking to the future, TAO is bringing ground-based IR observations to literal new heights at Chajnantor with instruments like MIMIZUKU, VLTI/NOTT will allow new views of exoplanets thanks to mid-IR nulling and ELT/METIS will be pushing to new sensitivities in upcoming years. In space, potential projects like LIFE and PRIMA promise to continue expanding our view of the obscured universe.

The IR2026 conference will look to the both the past and the future, looking at the legacy of the soon to be decommissioned VISIR, what we have learnt so far from MIRI and MATISSE, and to prepare for the new instruments on the horizon.

 

The adaptive optics assisted GRAVITY instrument marks its 10-year anniversary of science operations at the VLTI in late 2026. Over the past decade, GRAVITY has pushed optical long baseline interferometry to new frontiers. With its internal fringe tracker, dual-field capabilities, and unique metrology system, GRAVITY has pushed the limits of many areas of astronomy from exoplanets to AGN.

10 years of GRAVITY at VLTI will be a celebration of a decade of science with this unique instrument. The conference will cover all topics that can be covered with the GRAVITY instrument.

 

White dwarf binaries are fundamental astrophysical probes. They serve as ideal laboratories for testing models of binary evolution, which also govern the formation of gravitational wave sources. Their final fate is closely linked to thermonuclear transients, including Type Ia Supernovae (SNe Ia). Furthermore, through nova eruptions and SN Ia explosions, white dwarf binaries inject energy and enriched material into the interstellar medium, driving star formation and shaping the chemical evolution of our Galaxy.

Upcoming Gaia data releases, new wide-area multi-object spectroscopic facilities (4MOST, DESI, WEAVE, and SDSS-V), and deep time-domain surveys like LSST will identify hundreds of thousands of new white dwarf binaries. In addition, several new ESO facilities will offer transformational capabilities, ranging from the upgrade of the VLTI (with GPAO+LGS) to SOXS, MOONS, CUBES and the upcoming first light of the ELT.

In light of this order-of-magnitude increase in observational data, it is important and timely to stimulate collaborations among diverse research communities working on the observations, theoretical modelling, and population statistics of these binaries. This workshop aims to bring together scientists from complementary sub-fields of white dwarf binaries to define the future trajectory of this rapidly evolving field.