What a Missing Signal Tells Us About Alien Worlds

What a Missing Signal Tells Us About Alien Worlds
By Mark Thompson (https://ift.tt/eb1j5wN)

When astronomers detected potential biosignatures in the atmosphere of exoplanet K2-18 b, it raised a critical question, ‘could this world's atmosphere even survive its host star's radiation?’ A new study using the Very Large Array searched for radio emissions from the K2-18 system and found something surprising, it was absolutely silent. That absence of radio signals reveals K2-18 is an unusually quiet star, suggesting the planet's atmosphere faces minimal erosion from stellar activity.

November 12, 2025 at 03:05AM
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