Seeing a satellite zip across the night sky can be a fascinating sight. However, what may be spectacular for people on the ground is becoming a major problem for astronomers. A new study published on the arXiv preprint server has found that satellites from Amazon’s mega Leo constellation (originally known as Project Kuiper) are bright enough to disrupt astronomical research.

Amazon launched the first satellites for its Project Kuiper in April 2025. Eventually, the constellation will comprise 3,232 satellites to provide high-speed internet across the globe. However, this connectivity can come at a cost.