Psyche is Still Sending Data Home at Broadband Speeds

NASA’s Psyche spacecraft is shown in a clean room at the Astrotech Space Operations facility near the agency’s Kennedy Space Center in Florida on Dec. 8, 2022. DSOC’s gold-capped flight laser transceiver can be seen, near center, attached to the spacecraft. NASA/Ben Smegelsky

When I heard about this I felt an amused twinge of envy. Over the last year I have been using an unimpressive 4G broadband service and at best get 20 Mbps, NASA’s Psyche mission has STILL been getting 23 Mbps at 225 million km away! It’s all thanks to the prototype optical transmission system employed on the probe. It means it can get up to 100 times more data transmission rate than usual radio. 

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NASA Tightbeams a Cat Video From 31 Million Kilometers Away

This 15-second clip shows the first ultra-high-definition video sent via laser from deep space, featuring a cat named Taters chasing a laser with test graphics overlayed. Credit: NASA/JPL-Caltech

NASA’s Deep Space Network (DSN) has been responsible for maintaining contact with missions venturing beyond Low Earth Orbit (LEO) since 1963. In addition to relaying communications and instructions, the DSN has sent breathtaking images and invaluable science data back to Earth. As missions become more sophisticated, the amount of data they can gather and transmit is rapidly rising. To meet these growing needs, NASA has transitioned to higher-bandwidth radio spectrum transmissions. However, there is no way to increase data rates without scaling the size of its antennas or the power of its radio transmitters.

To meet these needs, NASA has created the Deep Space Optical Communications (DSOC), which relies on focused light (lasers) to stream very high-bandwidth video and other data from deep space. Compared to conventional radio, optical arrays are typically faster, more secure, lighter, and more flexible. In a recent test, NASA used this technology demonstrator to beam a video to Earth from a record-setting distance of 31 million km (19 million mi) – about 80 times the distance between the Earth and the Moon. The video, featuring a cat named Taters, marks a historic milestone and demonstrates the effectiveness of optical communications.

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Psyche Gives Us Its First Images of Space

NASA's Psyche spacecraft has released its first images. The spacecraft is firing on all cylinders as it makes its way toward its target, the metal-rich asteroid with the same name. Image Credit: NASA

NASA’s Psyche mission began eight weeks ago when it launched from the Kennedy Space Center. While it won’t reach its objective, the metal-rich asteroid Psyche, until 2029, the spacecraft has already travelled 26 million km (16 million miles.) During that time, it’s already had its share of success as it ticks off items on its checklist of tests.

Now, we have our first images from Psyche. And while they don’t show us anything about its eventual target, they give us a behind-the-scenes look at how complex spacecraft prepare themselves as they cruise toward their destinations.

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We’re Entering a New Age When Spacecraft Communicate With Lasers

This artist's illustration shows NASA's Psyche spacecraft approaching the asteroid of the same name. Image Credit: Maxar/ASU/P. Rubin/NASA/JPL-Caltech

In October 2023, NASA launched its long-awaited on-again, off-again Psyche mission. The spacecraft is on its way to study the metal-rich asteroid 16-Psyche, an M-type asteroid that could be the remnant core of a planetesimal that suffered a collision long ago. But understanding the giant, metal-rich asteroid isn’t the Psyche mission’s only goal.

It’s also testing a new laser communication technology.

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