The Hungarian Astronaut and the crew members of the AX4 mission will observe TLEs from the International Space Station. This is the UHU project.

Latest news, updates

EGU26 conference poster on the contribution of citizen observers to the UHU project

May 9., 2026
A poster has been presented in the Atmospheric Electricity session of the EGU26 international conference on the great contribution of ground-based citizen observers to the UHU experiment. The poster demonstrates that all conditions were met to observe TLEs from the space and from the ground simultaneously. The only thing that prohibited the fulfillment... Details »

UHU mission debriefing

January 20., 2026
An opportunity was created for the ground science team of the UHU experiment to meet Tibor Kapu, the Hungarian astronaut of the Ax-4 mission, and discuss the practical aspect of carrying out nighttime video observations from the International Space Station. The meeting, held on the 14th of January, 2026, was particularly useful as it helped to better understand... Details »

A simple card game on hunting red sprites

December 26., 2025
From the game rules:In this game, you become a storm chaser who photographs special light phenomena appearing above lightning-rich thunderstorms.All you need to play this game is a deck of ordinary playing cards. Recommended number of players: 1–6 Recommended age: 8+Game duration: 15–25 minutes Read the Game Rules for more information!Enjoy! Big thanks... Details »

UHU calendar/images

December 23., 2025
As a gift of the season and as a recognition of all contributors to this procect, 12 images are shared for calendars on the UHU 2025 experiment. The images in this set are intended to be printed in monthly calendars to exhibit imagery obtained in connection with the UHU Earth observation experiment in 2025, part of the scientific payload of Axiom Space’s... Details »

Blue Pixies in UHU Experiment Observations

December 3., 2025
Another type of transient luminous event has been identified within the observational material of the UHU experiment. The pixie, also known as a blue emission, or simply ‘blue’, is a short-lived variant of corona discharges. These flashes typically form at or near the top of an active thundercloud. Although their name originates from early long-distance... Details »

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