A spectrogram showing a radio signal received on Earth. The bright points on the blue background represent an anomalous signal detected by a radio telescope during a SETI search. While initially thought potentially extraterrestrial, further analysis suggests a terrestrial origin, possibly from GPS satellite modulation. The vertical axis represents time, and the horizontal axis represents frequency.

Astronomy Picture from 07/03/2004

An Anomalous SETI Signal

Source: https://apod.nasa.gov/apod/ap040307.html


#SETI #AlienSignals #RadioAstronomy #SpaceSignals #ExtraterrestrialIntelligence #UnidentifiedSignal #Astronomy #Cosmos #SpaceExploration #Science

A dynamic spectrogram displaying an anomalous radio signal detected by a radio telescope. The bright white vertical line against the blue background represents the signal, its origin currently debated – potentially extraterrestrial, but more likely a terrestrial source like GPS satellite modulation. The vertical axis shows time, the horizontal axis shows frequency. The image showcases the ongoing search for extraterrestrial intelligence (SETI) and the challenges of identifying unusual signals from space.

Astronomy Picture from 06/02/2011

An Anomalous SETI Signal

Source: https://apod.nasa.gov/apod/ap110206.html


#SETI #aliens #radioastronomy #space #extraterrestrial #unidentifiedsignal #astronomicaldata #cosmicmystery #spaceexploration #science #astronomy #searchingforlife #deepspace #universe