Amateur astronomers using the Dwingeloo Radio Observatory in the northeastern Netherlands have picked up a signal from NASA's Voyager 1 spacecraft, over 25 billion kilometers (15 billion miles) away.
The Voyager probes, launched in 1977, have performed spectacularly well over nearly half a century, flying past various planetary bodies and studying them before continuing to the outer reaches of the Solar System. Voyager 1, the first of the two probes to launch, is now 171 astronomical units (AU) from Earth, where 1 AU is the average distance from Earth to the Sun.
On November 13 of this year, Voyager 1 is expected to hit a new landmark for humanity; the first time a human-made object has reached a full light day from Earth. When that happens, it will never be possible to communicate with the probe from Earth without factoring a full day's travel time for the signal.
While a resounding success, the probes are starting to show some signs of wear and tear. A diminishing fuel supply has taken its toll, forcing NASA to shut down scientific instruments to keep the rest of the craft running. There have also been several glitches, with Voyager 1 sending back a garbled pattern of zeros and ones for a time due to corrupted memory, then shutting down its main transmitter entirely. The latter problem was solved in October 2024 by switching temporarily to a transmitter not used since 1981. Since then, communication with the aging spacecraft has been steady, with NASA's Deep Space Network regularly receiving data from both probes. It's no easy feat, given the distances involved.

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