The Federal Communications Commission (FCC) has approved a new test satellite by Reflect Orbital, a California-based company, that aims to create ‘sunlight on demand’ from space. This decision has stirred debates over its advantages, risks, and the FCC’s approval process.
Details of the Proposal
The satellite, named Earendil-1, features a large mirror designed to redirect sunlight to specific areas on Earth. The light would illuminate an area approximately 5 kilometers wide. The mirror requires repositioning every four minutes due to the satellite’s orbit. Reflect Orbital suggests that the technology may benefit agriculture and emergency response by providing wide-area lighting. Future plans involve deploying a larger network for increased coverage.
Concerns Raised by Experts
Despite potential benefits, astronomers and experts express concerns about unexpected effects of large reflective satellites. University of Texas professor Moriba Jah criticizes the FCC’s decision-making process, describing it as a pattern in commercializing space: act first, assess later.
University of Regina’s astronomy associate professor Samantha Lawler argues that a single satellite offers minimal benefits, noting its light is only slightly brighter than moonlight and short-lived. To achieve viable solar power, a large number of satellites would be necessary.
Impact on Astronomy and Environment
Critics, including astronomers and environmentalists, worry about potential light pollution from the reflective satellites. Reflections could disrupt astronomical studies and overwhelm telescope sensitivity, interfering with observations of faint night sky objects. The practicality of consistent artificial illumination is questioned by some astronomers given the need for numerous satellites.
Environmentalists raise issues regarding wildlife, human health, and space sustainability. Artificial lighting at night can affect animal behavior and disrupt human circadian rhythms. Safety risks may also arise for pilots and drivers due to bright reflections. Deploying a large number of satellites could complicate low-Earth orbit management, increasing risks of collisions.
FCC’s Position and Governance Concerns
The FCC acknowledged concerns about potential harms but stated that these issues fall outside its jurisdiction, which is limited to radio-frequency spectrum authorization. Professor Jah criticized the governance stance, pointing out that over 1,600 public comments were ignored, with no federal body reviewing environmental impacts.
Lawler also expressed worry about the dismissal of public opposition letters. She highlighted a regulatory gap, where no U.S. federal agency manages optical light emissions or satellites’ environmental effects, allowing satellite companies to exploit the situation.
Next Steps
The Earendil-1 mission marks an initial trial to assess if orbiting satellites can effectively reflect sunlight to Earth. It could provide valuable insights into the technology’s practicality and address environmental and societal issues related to increased nighttime lighting.
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