Space & Atmoshperic Sciences

If you have visited the Arecibo Observatory in the past decade, you may have met Eframir Franco Díaz, who has worked as a researcher, lab assistant, technician, analyst, academic guide, and REU Coordinator at the observatory since he was a high school student in 2009.

And while Mr. Franco Díaz attributes his current, highly successful professional trajectory to what the Arecibo Observatory has given to him, his dedication to all aspects of the facility over the past 12 years has had a significant impact on the observatory itself. + Read More


The highly anticipated arrival of the Culebra Aerosol Research Lidar (CARLA) instrument container to the Arecibo Observatory occurred on February 5th, 2021. This marks the beginning of the installation of the new CARLA instrument that had been funded through a grant from the Puerto Rico Science, Technology and Research Trust in 2020. + Read More

Space & Atmospheric

A unique, high-altitude plasma cavity formed over Arecibo during an ionospheric heating campaign conducted at the observatory in June of 2019. Simultaneously, the Arecibo Incoherent Scatter Radar (ISR) collected measurements of the narrow cavity, revealing an exceptionally deep depletion of the electron density and a strong enhancement of the electron and ion temperatures. Read More