In June 2024, scientists detected a mysterious and powerful explosion of radio waves from within our galaxy. At first they thought it was from a pulse or another uncovered cosmic object. However, an analysis revealed that the origin of the signal was very close to Earth. Astronomers think it was caused by a long -dead NASA satellite relay, was released in 1964, but interrupted operations in 1967 after their communication systems failed. However, almost 60 years later, he mysteriously issued a powerful radio sign, the researchers told a new pre-impression study, which was published on June 13 to the Arxiv server and has not yet been reviewed by peers.
Relay 2: A silent satellite sends a high signal
According to the to studyThe signal was detected using the Pathfinder of the Australian square kilometers (Ashap) Telescope array. These intense flashes usually originate from deep space and can carry more energy in milliseconds than the sun emits over several days.
But this sign, lasting only 30 nanoseconds, was tracked to the Earth’s neighborhood, very close for Askap to focus clearly. After discarding cosmic sources, the team drew the wrist to the relay orbit 2. Although it does not have functional systems, the satellite somehow emitted the brightest radio flash in the sky at that time.
The researchers proposed two theories: an impact of micrometeorite that created a cloud of radio station plasma or an electrostatic discharge (ESD) caused by load accumulation in satellite aging materials.
New clues about the behavior of the spacecraft and space debris
Although both mechanisms can produce similar signs, scientists include electrostatic discharge as the most likely cause. According to space physicists, the oldest spacecraft such as relay 2 can be especially prone to these energy releases due to outdated materials and limited shielding.
KAREN APllin told New scientist Studying these accidental emissions can help monitor ESD events in today’s small satellites – many of which do not have advanced protection either. In an increasingly crowded orbital environment, this detection method can offer a new tool to evaluate spatial debris and satellite health.
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