Scientists have recorded a radio signal from the interstellar comet 3I/ATLAS for the first time

Наталья Маркова In the world
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The message about this discovery appeared on the portal The Astronomer's Telegram. The signal was registered on October 24 using the South African radio telescope MeerKAT, which detected absorption in the frequency ranges of 1665 and 1667 MHz. In previous observations in September, scientists were unable to catch the signal.

Avi Loeb, an astrophysicist from Harvard University, noted that on March 16, 2026, when comet 3I/ATLAS approaches Jupiter, the spacecraft "Juno" will attempt to capture the signal at low frequencies.

Comet 3I/ATLAS was discovered on July 1, 2025, and recognized as interstellar due to its hyperbolic orbit, indicating no connection to the Sun's gravity. After passing through the solar system, it will permanently leave its boundaries.

Loeb also hypothesized that the comet may emit light similar to that of car headlights, which has sparked lively discussions among scientists. The reasons for such luminescence are still unclear.

According to computer modeling, the age of 3I/ATLAS is over 7.5 billion years, making it older than our Sun and possibly the oldest known comet.

This is already the third interstellar object recorded in our solar system, after 1I/Oumuamua and comet Borisov.
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