For four decades, many SETI experiments have focused on finding sharp spikes in frequency but the new study says signals may not stay narrow as they travel away from their home system.

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder ...

Solar storms around distant stars may be erasing alien radio signals before we ever hear them In A Nutshell Stellar winds and ...

What does it take to detect a radio signal sent by extraterrestrial life to Earth? Two decades of work involving radio telescopes stationed on opposite sides of the world, a supercomputer in Germany, ...

The mysterious Persian-language transmission began about 12 hours after the start of the US-Israeli bombing campaign against Iran. It was jammed five days later. Is it a coded message for US agents in ...

Scientists have detected a powerful radio signal originating from a galaxy 8 billion light-years away, marking a significant milestone in our understanding of the universe. This discovery not only ...

The Allen Telescope Array, Hat Creek Radio Observatory. Credit: Alexander Pollak. Radio interferometry is a technique in radio astronomy where signals from two or more radio telescopes are combined to ...

The planet K2-18b, which drew intense speculation last year due to apparent signs of life, shows no signs of advanced civilisation after a comprehensive search for radio signals from it. In 2025, ...

Astronomers used the VLA and MeerKAT radio telescopes to search the Hycean exoplanet K2-18b for alien technosignatures, analyzing millions of signals but finding no confirmed artificial radio transmis ...