The objective of the JEM-EUSO program, is the realisation of a space mission devoted to Ultra-High Energy Cosmic Ray (UHECR) science. A super-wide-field telescope will look down from space onto the night sky to detect UV photons emitted from Extensive Air Showers (EAS) generated by UHECRs in the atmosphere. The JEM-EUSO program includes different missions from ground (EUSO-TA), from stratospheric balloons (EUSO-Balloon,EUSO-SPB1,EUSO-SPB2) and from space (TUS, Mini-EUSO) employing fluorescence detectors, and more recently Cherenkov detectors, to demonstrate the UHECR observation from space and prepare large-size missions such as K-EUSO and POEMMA.
In this contribution we will review the current status of the program, the key results obtained so far by the different projects, and the perspectives for the near future.
UHECR; EAS; space-based observation
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