Ongoing missions: a documented snapshot of space astronomy in 2026

Space exploration and astronomy advance not only through major announcements, but also through data catalogues, sample analyses, repeated observations and experiments developed over years. The available references place several such activities in 2026. Together, they mention scientific work on the International Space Station, asteroid research, publications based on TESS observations, an instrument called COSI, the future Nancy Grace Roman Space Telescope, and an ESO assessment of the effect of large satellite constellations.

The scope needs to be clear: the evidence consists of short descriptions of NASA and ESO pages, rather than the full studies, catalogues or releases. This overview therefore does not assign additional goals, capabilities, numerical findings or schedules to the cited missions and instruments.

The ISS as a research platform

The International Space Station (ISS) is an Earth-orbiting station where astronauts conduct research. A NASA page on the latest station-research news says that the ISS has been busy throughout 2026 as a workspace for astronauts conducting a variety of scientific experiments. The same description says those experiments help lay the groundwork for missions to the Moon and beyond.

The reference does not identify the specific experiments or their results. It does provide an example of scientific infrastructure installed there: the Alpha Magnetic Spectrometer, or AMS-02. NASA describes it as a cosmic-ray particle detector installed on the ISS in May 2011. On 4 August 2026, according to NASA’s HEASARC high-energy astrophysics research archive news page, a catalogue of incident rates for all particle species obtained with AMS-02 was released.

Such a catalogue organises measurements for consultation and reuse. The supplied description does not state what analyses were made with it or what physical conclusions follow from it; it does, however, support the continued production and release of data from a detector operating on the station.

Asteroids: from Bennu to Didymos

Another item points to a 2026 article in The Planetary Science Journal, titled Physical analysis of Bennu samples reveals regolith production by collisional disruption on near-Earth asteroids. NASA’s laboratory astrophysics publication list attributes it to R.-L. Ballouz, A. J. Ryan, R. J. Macke and colleagues, and supplies its DOI. Its title indicates that physical analysis of Bennu samples addresses regolith—loose surface material—production through collisional disruption on near-Earth asteroids.

The reference does not summarise the paper’s methods, samples or detailed conclusions. It is therefore not possible to quantify regolith production or extend the finding to other bodies beyond what its title states.

NASA’s astronomy page also says that the DART mission changed asteroid Didymos’s orbit around the Sun. DART is a NASA mission whose name stands for Double Asteroid Redirection Test. The supplied evidence does not explain how that change was established, its magnitude, or the role of other objects in the Didymos system. The statement should be read as the wording of the linked page, not as an independent reconstruction of the result.

Observatories, publications and preparations

Ongoing missions also generate research through their archives. The astrophysics-publications page for TESS lists 2026 peer-reviewed work on detached eclipsing binary systems toward the open cluster NGC 7209 and on Delta Scuti, Gamma Doradus and RR Lyrae stars identified with TESS and SuperWASP data. TESS is NASA’s sky-survey satellite; SuperWASP is another observing programme named in one paper’s title. The evidence does not support a description of the papers’ results or confirmation that all their data came exclusively from TESS.

A NASA news page also displays an image of the II Zw 096 system dated 25 August 2026, described as two galaxies merging at a furious rate. Without the full release, that phrase cannot establish a merger rate, the system’s distance, or the instrument used for the image.

NASA presents the Nancy Grace Roman Space Telescope as a space telescope with a launch window listed as fall 2026 and as opening an unprecedented window on the universe. The source does not say whether that launch occurred, and provides neither an exact date, specific science goals nor operational status. COSI, short for Compton Spectrometer and Imager, also appears: a NASA photo news item describes UC Berkeley engineers and managers watching its detector assembly being slowly raised on 8 July 2026. The scene documents a detector-integration or handling stage, but alone does not establish the overall mission status.

The observable sky and satellite constellations

Studying the universe also depends on preserving usable observing conditions. A 1 July 2026 news release by ESO, the European Southern Observatory, reports a study finding that current proposals to launch more than 1.7 million satellites, including extremely bright ones, would have “devastating consequences for astronomy.” According to the same description, the study proposes no more than 100,000 faint satellites, although the available excerpt does not explain its methodology, time horizon, or criteria for brightness and impact.

This warning concerns not one mission, but the orbital environment from which and through which the sky is observed. Its inclusion alongside catalogues, instruments and telescopes highlights that space- and ground-based astronomy both depend on reliable data and a sky that can be measured.

What can be said, and what remains open

• NASA describes ongoing ISS experiments in 2026 and an AMS-02 catalogue released on 4 August that year.
• The references record a Bennu-sample article, TESS publications and an image of II Zw 096.
• NASA lists Roman’s launch window as fall 2026, but the supplied material does not confirm launch or operations.
• The COSI image records handling of its detector assembly, without detailing the mission’s overall phase.
• ESO reports a concerning assessment of proposed satellite constellations; the summary is not a substitute for the full study.

The lesson from this snapshot is continuity, not closure: NASA’s archives show measurements, publications and instrument preparation, while ESO flags an external condition that could affect observation. Assessing scientific results, schedules or implications beyond these statements would require the complete original documents.

Sources consulted: NASA, ISS research; NASA HEASARC news; NASA laboratory astrophysics publications; NASA Astrophysics; ESO news releases.