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Space
Space
Science
Kenna Hughes-Castleberry

Golden satellite insulation sparkles during test | Space photo of the day for Dec. 30, 2025

This is a close-up photo of a satellite model, seen from the side. A prominent feature is a cone-shaped nozzle extending from the centre of the model. The nozzle has an iridescent surface with shades of blue, purple, red and gold. The rest of the model is covered in crinkled gold-coloured thermal insulation, which is shiny and reflective. The background is out of focus, but horizontal metal rails mounted on the wall behind the model are visible. The lighting is bright and highlights the textures of the nozzle and the insulation.

Earth's orbital environment is becoming increasingly crowded. Thousands of satellites—many of them inactive, damaged, or out of fuel—now circle the planet alongside fragments of debris from past collisions.

As more and more satellites enter orbit, one of the biggest questions becomes: how can these satellites approach and maneuver around each other safely? To answer that question, Luxembourg-based companies LMO and ClearSpace carried out a carefully designed simulation using the European Space Agency's Guidance, Navigation and Control Rendezvous, Approach and Landing Simulator (GRALS).

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