Astrolight and ATMOS to Test First In-Flight Laser Link During Spacecraft Re-entry

Astrolight and ATMOS Space Cargo have partnered to demonstrate the first in-flight optical communications link between a re-entry spacecraft and an orbiting satellite. The mission, scheduled for 2027, seeks to maintain a real-time data channel during the most volatile phase of atmospheric return.

Under a signed memorandum of understanding, the partners will equip ATMOS' PHOENIX re-entry vehicle with Astrolight's ATLAS-X laser communication terminals. This hardware will establish a link with a Low Earth Orbit (LEO) satellite, aiming for data transfer rates of up to 2.5 Gbps during both in-orbit operations and the re-entry sequence. Astrolight CEO Laurynas Mačiulis noted that testing this link between PHOENIX and a satellite marks a significant milestone, as such capabilities have previously been explored in ground-based laboratory conditions.

The Plasma Problem

Traditional spacecraft re-entry is characterized by a "blackout" period. As a vehicle hits the atmosphere at hypersonic speeds, it creates a sheath of ionized plasma that surrounds the craft. This plasma layer reflects radio frequency (RF) signals, effectively cutting off all communication between the vehicle and ground control. This gap in telemetry leaves operators blind to the vehicle's health and guidance during a critical window of the mission.

Implications for Space Logistics

Eliminating the communication blackout is becoming increasingly urgent as the industry shifts toward more frequent cargo-return missions. These missions, which bring back scientific samples and products manufactured in orbit, require continuous monitoring to ensure safe recovery. Optical links offer a solution by providing data rates up to 100 times faster than RF systems while remaining more resistant to interception and jamming.

Beyond technical telemetry, the project aligns with broader strategic goals for European aerospace. Sebastian Klaus, CEO of ATMOS Space Cargo, stated that the company is working to provide Europe with independent and routine commercial access for returning from space. This effort supports initiatives such as the European Space Agency's (ESA) LEO Cargo Return Services, reducing reliance on external partners for critical return capabilities.

Future Outlook

If successful, the 2027 demonstration will prove that laser communications can penetrate the plasma sheath, providing a blueprint for future autonomous return operations. While the industry has long relied on RF, the shift toward optical systems could redefine how defense and commercial logistics manage the transition from orbit to Earth. The primary focus now remains the integration of the ATLAS-X terminals into the PHOENIX vehicle to ensure stability during the extreme thermal and physical stresses of re-entry.