NASA Hears Voyager 2’s ‘Heartbeat’ Amidst Communication Breakdown

An artist's depiction of a Voyager probe entering interstellar space. (Image credit: NASA/JPL-Caltech)
An artist's depiction of a Voyager probe entering interstellar space. (Image credit: NASA/JPL-Caltech)

In a remarkable display of resilience and engineering prowess, NASA’s Voyager 2 spacecraft continues to transmit a faint yet steady “heartbeat” from the depths of interstellar space. Launched from Earth in 1977, Voyager 2 has been a trailblazer in space exploration, visiting the gas giant planets before venturing into the unknown reaches beyond our solar system. Recently, the spacecraft faced a communication breakdown that temporarily severed its link with Earth, but NASA has managed to hear the spacecraft’s signal once again, providing hope for restoring full communication capabilities.

NASA engineers are now working to reestablish full communication with Voyager 2. They are sending the spacecraft commands to point its antenna back at Earth. However, it may take several weeks or even months for these commands to reach Voyager 2 and for the spacecraft to execute them.

Even though NASA has not yet reestablished full communication with Voyager 2, the fact that the spacecraft is still sending a signal is a good sign. It means that Voyager 2’s power systems and other essential systems are still functioning properly.

The Lost Signal and the ‘Heartbeat’

The setback occurred when a series of unintentional commands moved Voyager 2’s antenna two degrees away from Earth, causing the spacecraft to lose contact with its ground antennas in NASA’s Deep Space Network (DSN). The result was a pause in data transmission from interstellar space back to Earth. Despite the communication breakdown, a “carrier signal” was automatically sent, akin to the spacecraft’s “heartbeat,” indicating that Voyager 2 is still operational and attempting to establish a connection.

The “heartbeat” signal that NASA received from Voyager 2 was a very weak signal. It was so weak that it could only be detected by the Deep Space Network’s largest antennas.

The signal was also very intermittent. It comes and goes, lasting for only a few seconds at a time.

NASA scientists believe that the heartbeat signal was coming from Voyager 2’s plasma wave science instrument. This instrument is used to study the plasma environment around the spacecraft.

The scientists are not sure why the heartbeat signal was so weak and intermittent. They believe that it may be due to the fact that Voyager 2’s antenna was not pointed directly at Earth.

Recovering the Link

NASA’s Jet Propulsion Laboratory (JPL) swiftly took action to restore communication with Voyager 2. The next step involves sending a command to the spacecraft, instructing it to reorient itself towards Earth. If successful, data transmission can resume. However, if this command fails, the spacecraft’s onboard software will automatically initiate a reset of its direction in October, a procedure already programmed as a backup for such contingencies.

Voyager 2’s Monumental Journey

Voyager 2 embarked on its ambitious mission from Launch Complex 41 at Cape Canaveral, Florida, on August 20, 1977. Over the years, it performed close flybys of the four gas giant planets in our solar system, adding immeasurably to our understanding of these distant worlds. The mission provided breathtaking images and invaluable data about Jupiter, Saturn, Uranus, and Neptune, revolutionizing our knowledge of the solar system’s outer regions.

On December 10, 2018, Voyager 2 achieved an extraordinary milestone, entering interstellar space, becoming only the second human-made object to achieve this feat after its twin craft, Voyager 1. This marked a historic moment in space exploration, as humanity’s creations ventured beyond the influence of our sun and began to explore the vast expanse of the galaxy.

ALSO READ: OSIRIS-REx’s Trailblazing Mission to Bennu and Beyond

A Race Against Time

As Voyager 2 ventures further into the cosmos, it faces the challenges of aging technology and diminishing power. Both Voyager missions rely on nuclear radioisotope generators for power, which are gradually losing potency. However, engineers have made ingenious adjustments to prolong the spacecraft’s lifespan. They have turned off heaters and disabled the surge protector to conserve power while extending data collection capabilities. These measures have successfully postponed instrument shutdowns, ensuring that valuable data can continue to be transmitted until at least 2026.

Voyager 2’s Twin: Voyager 1

Voyager 2’s twin, Voyager 1, is also operational and has surpassed the boundary of our solar system. In 2012, Voyager 1 became the first human-made object to journey beyond the sun’s gravitational influence, making an indelible mark in space exploration history. The Voyager missions have provided humanity with a priceless perspective of our place in the universe, inspiring awe and wonder as we contemplate the infinite expanse of space.

The Enduring Legacy of Voyager

Beyond their scientific accomplishments, the Voyager missions have also had a profound impact on human culture. The famous “Golden Record” onboard each spacecraft contains a selection of sounds and images representing life on Earth, intended to communicate with potential extraterrestrial civilizations. These records encapsulate the essence of human civilization, our diversity, and our shared aspirations for peace and understanding.

NASA’s efforts to reestablish communication with Voyager 2

NASA engineers are sending Voyager 2 commands to point its antenna back at Earth. However, it may take several weeks or even months for these commands to reach Voyager 2 and for the spacecraft to execute them.

In the meantime, NASA engineers are also using the Deep Space Network to continue listening for Voyager 2’s heartbeat signal. They are also using other techniques to try to reestablish communication with the spacecraft.


The tenacity and spirit of exploration embodied by Voyager 2 continue to inspire and amaze. Despite facing communication challenges, the spacecraft’s “heartbeat” signals a determination to continue its mission in the uncharted realms of interstellar space. As we look forward to restoring full communication, we celebrate the extraordinary achievements of both Voyager missions, which have provided us with invaluable knowledge of our solar system and the boundless wonders of the cosmos. Voyager 2’s legacy will endure, reminding us of humanity’s indomitable spirit to explore and uncover the mysteries of the universe.

Here are some additional details about the Voyager 2 mission:

  • Voyager 2 was launched on August 20, 1977, from Cape Canaveral, Florida.
  • It was originally designed to fly by Jupiter and Saturn, but its mission was extended to include Uranus and Neptune.
  • Voyager 2 flew by Jupiter in July 1979 and Saturn in August 1981.
  • It flew by Uranus in January 1986 and Neptune in August 1989.
  • Voyager 2 entered interstellar space in November 2018.
  • It is currently traveling at about 38,000 miles per hour.
  • Voyager 2 is expected to continue sending data back to Earth for several more years.


Please enter your comment!
Please enter your name here