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Telescope observations, star catalogs, exoplanet surveys, galaxy morphology, gravitational waves, spectroscopy
2,942 datasets
Nagwan Alqershi's 83.5 KB PDF introduces the Space-AI Governance Nexus, a framework linking space data and AI to governance outcomes. The mixed-methods study combines quantitative analysis of 20 countries with qualitative evidence from 22 expert interviews and comparative case studies. The work, published on figshare in April 2026, highlights how unequal access to data infrastructures reinforces geopolitical hierarchies.
11,641 amateur visual magnitude estimates of Halley's comet collected by NASA's International Halley Watch from January 23, 1985, through February 23, 1988. The data were submitted by observers in the Amateur Observation Network and archived as part of a broader multi-disciplinary collection spanning the full wavelength range. The evaluation and selection for the archive was the responsibility of Discipline Specialist Teams in cooperation with the Lead Center.
36 sources from the Piccinotti sample, a complete 20-10 keV extragalactic sky survey, were analyzed using nearly 4 years of Compton Gamma-Ray Observatory (CGRO) BATSE Earth-occultation data. The analysis, published by Malizia et al. in 1999, detected 14 sources above a 5-sigma confidence level and reported upper limits for nine others. This HEASARC database was created by NASA in October 1999 based on the published results.
8,889 M dwarf stars with apparent infrared magnitude J < 10, selected from the SUPERBLINK and Tycho-2 surveys. The catalog, created by NASA HEASARC in 2011, includes parallax measurements, photometric distance estimates, and supplementary X-ray and ultraviolet data from ROSAT and GALEX. Completeness tests suggest it represents approximately 75% of the estimated 11,900 M dwarfs with J < 10 across the entire sky.
A catalog of 4,316 bright, highly likely active galactic nucleus (AGN) candidates identified using a statistical method (S_IX) applied to combined WISE, 2MASS, and ROSAT all-sky survey data. The sample contains nearly 2,000 new, relatively bright (J <~ 16) AGNs not previously in a major spectroscopic catalog. This table was created by NASA's HEASARC in June 2012 based on the reference paper.
402 hard X-ray sources detected by the INTEGRAL observatory over nine years starting in 2003, representing the deepest Galactic survey in its energy band. The catalog includes 253 identified Galactic objects, such as X-ray binaries and cataclysmic variables, and 115 extragalactic objects. This table was created by NASA's HEASARC in September 2012 based on published astronomical data.
NASA's Master EUV Catalog is a compendium of Extreme Ultraviolet (EUV) sources compiled from selected fields of multiple HEASARC database tables. It merges data from the EUVE Bright Source List (356 sources), the 2nd EUVE Source Catalog (801 sources), the ROSAT Wide Field Camera 2RE Catalog (479 sources), and other related catalogs. The catalog was last updated on March 13, 2026.
A catalog of radio-selected star-forming galaxy and AGN candidates with X-ray detections from the C-COSMOS survey. The HEASARC merged source tables from a 2012 reference paper, adding a classification parameter to distinguish between 'SFG' and 'AGN' samples. The data was created by the HEASARC in June 2012 based on CDS files and is provided by NASA HEASARC.
The Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE I) Archive contains infrared point source data from the Spitzer Space Telescope. It surveyed approximately 220 square degrees of the Galactic plane, resulting in over 77,000 pointings and about 310,000 IRAC frames. The dataset was produced by the National Aeronautics and Space Administration and was last updated in March 2026.
About 50% of the ~3 square degree radio survey's sources are identified with optical counterparts to m_R = 22.5 magnitudes. Spectroscopic observations for about 40% of the optically identified sample provide redshifts and stellar content, revealing most emission-line sources are star-forming galaxies. This catalog was created by NASA HEASARC in June 2013 based on data from the Australia Telescope Compact Array and associated optical/near-infrared observations.
Recent years have seen drastic changes in the age classification of marine Tertiary deposits in Australia. Detailed mapping and microfauna investigation in south-eastern Australia led to the recognition of Eocene deposits, including the discovery of the foraminiferal genus Hantkenina. The dataset, sourced from the Australian Ocean Data Network, documents these revisions, including the reclassification of the Janjukian Stage and Anglesean Stage.
Surface roughness and hardness measurements for 80 specimens of A-2000 maxillofacial silicone elastomer. The data compares non-filled samples with those filled with 3% or 10% silica or titanium dioxide nanofillers, both before and after two years of natural weathering. The dataset was created by Mohammed Mousa and published on figshare in April 2026.
80 specimens of A-2000 silicone elastomer were tested for surface roughness and hardness after two years of natural weathering. The data includes measurements for samples filled with 3% and 10% titanium dioxide and silica nanofillers, compared to non-filled controls. Author Mohammed Mousa published the dataset on figshare in April 2026.
Mohammed Mousa published a dataset on figshare in 2026 containing experimental results on the reinforcement of maxillofacial silicone elastomers. The data includes measurements of surface roughness and hardness for 80 specimens, comparing non-weathered samples with those exposed to two years of natural weathering and different nanofiller concentrations. Analysis was performed using profilometry, SEM, Shore-A durometer, and FTIR spectroscopy.
Global satellite position, velocity, and clock data are derived from real-time Global Navigation Satellite System (GNSS) streams by International GNSS Service (IGS) Analysis Centers. These precise orbit and clock products are used for comparison and validation purposes in geodetic and atmospheric science. The dataset includes final ionosphere products specifically from NASA's Crustal Dynamics Data Information System (CDDIS).
Fifteen spectral bands from 390 nm to 1040 nm provide calibrated top-of-atmosphere radiance measurements at a 300-meter resolution. The European Space Agency's MERIS instrument on the Envisat-1 satellite collected this data from March 2002 until contact was lost in April 2012, with products reprocessed in 2020. Each Level-1 product contains 22 files, including radiance and error estimates for each band alongside annotation data.
Indo-Pacific region data from three marginal-marine sections and deep oceanic sediments. The dataset contains biostratigraphic evidence for nannofossils and planktic foraminifera, used to analyze the Oligocene-Miocene boundary. It was published by Geoscience Australia Data and last updated on 2026-04-30.
Dinoflagellate microfossils provide a reliable method for distinguishing Late Miocene-Early Pliocene sediments from older, lithologically similar deposits. The dataset identifies species like Melitasphaeridium aequabile and Tectatodinium psilatum as diagnostic for the Bookpurnong Beds, while Apteodinium australiense indicates older Murray Group formations. This data originates from Geoscience Australia and was last updated in May 2026.
A family of selective 2D NMR methods designed to address signal overlap in 1H NMR spectra. The dataset, shared by Ralph Adams under a CC-BY-4.0 license, contains data from experiments that generate 2D J-resolved spectra for chosen spin systems. The data was last updated on 2026-04 27.
A compilation of all publicly-announced gamma-ray pulsars detected by the Fermi Large Area Telescope (LAT). The list is maintained by the LAT team and includes only detections vetted to a significance of at least 5 sigma. The data is provided by the National Aeronautics and Space Administration and was last updated on 2026-04-10.