SMRTR Science & EngineeringMay 19, 2026Interesting Engineering

Why space internet is turning to lasers instead of radio waves

SMRTR summary

With over 10,200 Starlink satellites in orbit and 100,000 expected by 2030, radio frequencies used for satellite communication are becoming dangerously overcrowded, causing interference between competing networks. Laser communication offers a powerful alternative — using infrared light beams that carry far more data with less power and virtually zero interference. The main challenge is that lasers can't penetrate clouds, but companies like Astrolight are developing ground stations and algorithms to overcome atmospheric distortion.

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