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Radio waves from SpaceX’s Starlink satellites are creating challenges for astronomers by interfering with radio telescopes, according to a BBC report. The new v2 Starlink satellites emit stronger radio signals than their predecessors, making it difficult to observe galaxies, nebulae, star clusters, and other deep-sky objects.
This disruption affects researchers who rely on radio telescopes to capture electromagnetic emissions from these distant celestial bodies.
The Netherlands Institute for Radio Astronomy (ASTRON) highlighted the problem during recent observations. Deep-sky objects emit light across the electromagnetic spectrum, and radio telescopes are essential for studying parts of the universe invisible to optical telescopes. ASTRON noted that the stronger radiation from the V2 satellites is creating significant obstacles for radio astronomy.
SpaceX, led by Elon Musk, has launched over 7,000 Starlink satellites, controlling around two-thirds of all active satellites in Earth’s orbit. These satellites are part of SpaceX’s mission to provide global internet services and reduce the digital divide. The company plans to continue launching about 40 satellites every week, which will further increase electromagnetic emissions in orbit.
Astronomers warn that without action, artificial satellites could dominate the night sky. Professor Jessica Dempsey, director of ASTRON, told the BBC, “The only constellations we will see will be human-made.” She stressed the need for immediate measures to limit interference from satellite constellations and protect astronomical research.
To address the issue, scientists suggest solutions such as adjusting satellite frequencies, shielding emissions, or limiting launches during critical observations. The growing number of satellites underscores the tension between advancing global internet services and preserving the ability to study the universe through radio astronomy.
Source: Bright unintended electromagnetic radiation from second-generation Starlink satellites
