This redefined a long-distance call.
Earth just received a laser transmission from a world- (and perhaps universe) record-breaking 140 million miles away — which could have major implications for the future of space travel.
However, this correspondence wasn’t extraterrestrial in origin: It was actually sent by NASA’s Psyche spacecraft, which is currently located approximately 1.5 times the distance between Earth and the Sun.
“This represents a significant milestone for the project by showing how optical communications can interface with a spacecraft’s radio frequency comms system,” Meera Srinivasan, the project’s operations lead at NASA’s Jet Propulsion Laboratory in Southern California, said in a statement.
3 Earth just received a laser transmission from a world (and perhaps universe) record-breaking 140 million miles away — which could have major implications for the future of space travel. Aliaksandr Marko – stock.adobe.com
3 This visualization shows the Psyche spacecraft’s position on April 8 when the DSOC flight laser transceiver transmitted data at a rate of 25 Mbps over 140 million miles to a downlink station on Earth. NASA/JPL-Caltech
This major breakthrough was achieved by using a Psyche feature called Deep Space Optical Communications, or DSOC, one of the droid’s several task per Space.com. Its main directive is exploring 16 Psyche, the $100,000 quadrillion asteroid from which it takes its name.
NASA wanted to show the potential for laser communications to be conducted across interstellar distances, allowing for high bandwidth and a much speedier connection — from 10 to 100 times faster than what’s available today — between humans and the probes they send into space.
This achievement was particularly significant as, along with sending the laser message a record-breaking distance, NASA also managed to transmit actual data gathered from the spacecraft.
“We downlinked about 10 minutes of duplicated spacecraft data,” explained Srinivasan. “Until then, we’d been sending test and diagnostic data in our downlinks from Psyche.”
To wit, in November of last year, Psyche sent back to Earth from 10 million miles away, but it was pre-loaded test data and not any “real” info.
3 This watershed moment provides a taste of how spacecraft like Psyche (pictured) “could use optical communications in support of humanity’s next giant leap: sending humans to Mars,” NASA wrote. NASA/Ben Smegelsky
This marked the culmination of a series of messages sent by the probe since it launched on October 13th atop a SpaceX Falcon Heavy Rocket.
During a prior dry run in December, Psyche beamed data back from 19 million miles away, sending it at the system’s maximum rate of 267 megabits per second.
This correspondence — which included footage of an orange tabby cat named Taters — took around just over a minute and a half to reach earth, which is comparable to broadband internet speeds.
By contrast, this latest DSOC transmission was only 25 megabits. This was due to the fact that Psyche was seven times further away, reducing the speed at which it could send and receive messages.
Despite the comparatively syrupy speed, this nonetheless eclipsed the project’s goal of “proving at least 1 Mbps was possible at that distance,” per the release.
This watershed moment provides a taste of how spacecraft “could use optical communications in support of humanity’s next giant leap: sending humans to Mars,” NASA wrote.
Psyche is slated to fly by the Red Planet by 2026, whereupon it will fly toward its main destination, 16 Psyche, which it should reach by 2029.
Like the early pioneers’ search for the Northwest Passage, it will aim to map out this final frontier El Dorado, which contains enough precious metals to crash the gold market.
Space laser transmission strikes Earth from 140 million miles away: NASA
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