The Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS) is one of the three institutes of the National Observatory of Athens, the oldest research institution in Greece. The main activities of the Institute involve basic and applied research in a number of topics in astrophysics, from distant galaxies to the solar neighborhood, as well as ground based and space-borne remote sensing, earth observation and signal processing. The institute is also committed to outreach and science dissemination for the general public and operates two very popular visitor centers at Penteli and Thissio.


Navigate through our research areas

Helmos Observatory

Visit the website for the 2.3 m telescope "Aristarchos"


Learn about our research infrastructure


We support the education of young scientists

Visitor Centers

Discover the Universe with us!


Find out about our future seminars


Find out about our future conferences


Self-Study Reports and Annual Activity Reports

Monitoring Forest Fires

Monitor forest fires in real time via satellite observations

Ionosphere conditions

Check out the conditions in the ionosphere in real time

SENTINEL-1 Differential Interferograms

Inspect/download the latest interferograms of central Greece by AIPS

GNSS processing station

Inspect the latest positioning solutions of GNSS stations of Greece by NGProS


Centre of Excellence for EO Sciences and Services (BEYOND)

The Moon Guardians

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National Observatory of Athens
Institute for Astronomy, Astrophysics, Space Applications & Remote Sensing
Vas. Pavlou & I. Metaxa, 15236 Penteli, Greece