Elon Musk’s ‘UFO on a stick’ devices for Starlink satellites may turn subscribers into the SpaceX internet service’s greatest asset

A computer scientist’s rendering of SpaceX’s constellation of satellites for Starlink: a scheme to provide global, high-speed, low-latency internet service.

Mark Handley/University College London

In 2020, SpaceX plans to launch 60 Starlink satellites every two weeks, ostensibly to create a functional global internet service by the end of the year.Customers would connect to Starlink using what Musk described on Tuesday as a device that looks like a “UFO on a stick” and only needs to be plugged in and pointed skyward.Computer scientist Mark Handley previously calculated that Starlink can beat fiber-optic cables, in terms of round trip travel time for user data. However, that was before SpaceX said a key satellite-to-satellite laser technology wouldn’t be ready to launch until the end of 2020.But Handley thinks SpaceX will use the “UFO” terminals as ground stations — a scheme that could be nearly as fast as laser links, and even faster than lasers alone when used in combination.This suggests Starlink subscribers could become critical parts of a global, high-speed, and resilient mesh network instead of just end users.Sign up for Business Insider’s transportation newsletter, Shifting Gears, to get more stories like this in your inbox.Visit Business Insider’s homepage for more stories.SpaceX is racing to launch about 1,400 satellites this year and boot up Starlink, a planet-wide, ultra-high-speed internet service. The rocket company, founded by Elon Musk, may ultimately send up 12,000 or even 42,000 in the coming decade.To that end, SpaceX on Monday launched a pallet of 60 freshly redesigned Starlink satellites on Monday — adding to 120 experimental spacecraft already in orbit — and plans to pull off similar launches every two weeks.With anticipation building over Starlink’s debut, company founder Elon Musk explained how future subscribers will connect to the service using a device called a phased-array antenna, which he said in 2015 should cost around $200 each. (Though some industry analysts say such devices today cost about 10 times as much.)”Looks like a thin, flat, round UFO on a stick. Starlink Terminal has motors to self-adjust optimal angle to view sky,” Musk tweeted, adding that all a user has to do is plug it in and point it upward. “These instructions work in either order. No training required.”What Musk did not say is how, exactly, early adopters will actually send and receive data — whether it’s information about financial markets halfway around the world, or streaming video of “The Bachelor” on a Hulu server farm — using satellites moving around Earth at 17,000 mph, and in a dizzying variety of paths called orbital planes.But Mark Handley, a computer science professor at University College London, posted a YouTube video on December 20 that models the Starlink network and makes some educated guesses. Handley said he used recent documents from the Federal Communications Commission (FCC) and statements from both Musk and Gwynne Shotwell, SpaceX’s president and COO, to arrive at his conclusions.If Handley’s latest guesswork is correct, each of Musk’s “UFO on a stick” terminals that users pay to handle their own data could be a secret weapon that helps Starlink get data for countless other subscribers to and from its destination — and do so at speeds that handily beat fiber-optic cables. (SpaceX did not respond to Business Insider’s queries on the matter.)”This is the most exciting new network we’ve seen in a long time,” he previously told Business Insider. He added that the project could affect the lives of “potentially everybody.”Here’s how Handley thinks Starlink might work this year and going forward.

Musk has said grabbing just 1-3% of the global telecommunications market through Starlink could pocket SpaceX tens of billions per year in revenue — much more than it may ever make launching rockets.

SpaceX founder Elon Musk.

Dave Mosher/Insider

SpaceX can launch 60 roughly desk-size, 500-pound satellites at a time into space within the nosecone of its Falcon 9 rocket system.

SpaceX stuffed a fleet of 60 Starlink internet-providing satellites into the nosecone of a Falcon 9 rocket for launch in May 2019.

Elon Musk/SpaceX via Twitter

Source: Business Insider

The internet is basically a series of connected computers, but how and where the computers are connected can make a significant difference. SpaceX’s gambit with Starlink is make access faster and more widespread, yet less laggy and expensive than is provided by current middlemen we pay — our internet service providers.

A router connecting multiple computers to the internet via cables.
Associated Press

But fiber is fairly expensive and tedious to lay, especially between locations on opposite sides of the Earth.

Reeltender Mo Laussie watches fiber-optic cable as he helps install the cable unto telephone poles June 21, 2001 in Louisville, CO.
Michael Smith/Getty

Even within a country, achieving a direct wired path from one location to another is rare. Relying on ground cables also leaves many regions poorly connected.

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Cables have a speed limit, too: Light moves through the vacuum of space about 47% faster than it can through solid fiber-optic glass.

A prism bends and splits up white light into a rainbow of colors because the speed of light is slower in glass than it is in air.


Source: Florida State University

This isn’t an issue for normal browsing or watching TV. But over international distances, Handley previously said, it leads to high latency, or lag. The time delay is especially pronounced in long-distance videoconferencing and voice calls made over the web.

The president speaks with children over a video conference.

Carolyn Kaster/AP

Data beamed over existing satellites is some of the laggiest. That’s because nearly all those spacecraft orbit from 22,236 miles (35,786 kilometers) up, where they can “float” above one location on Earth. That’s enough distance to cause a more than half-second of lag.

An illustration of two different geostationary satellites, which orbit about 22,300 miles above Earth’s surface.

NASA’s Scientific Visualization Studio; Business Insider

Source: University College London

Handley said that latency matters most to financial institutions. With markets that move billions of dollars in fractions of a second, any delay can lead to big losses over a competitor with a less laggy (and thus more up-to-date) connection to the web.

High-frequency-trading companies will try almost any new technology to learn about market changes before a competitor.
Reuters / Brendan McDermid

Shuttling data around the world via satellite — and mostly through the vacuum of space, not glass — should cut that lag while also providing screaming-fast internet service almost anywhere on Earth.

An illustration of SpaceX’s Starlink satellite internet constellation in orbit around Earth.


Source: Business Insider

SpaceX deploys each flat-packed stack of 60 satellites at once, yet very slowly rotates it in microgravity. This causes the stack to spread out like “a deck of cards on a table,” Musk said in 2019.

Source: Business Insider

From there, the satellites will use Hall thrusters (or ion engines) to rise to an altitude of about 342 miles (550 kilometers). This will be about 65 times closer to Earth than geostationary satellites — and that much less laggy.

A 13-kilowatt Hall thruster, or ion engine, being tested at NASA’s Glenn Research Center in Cleveland, Ohio.


Final Starlink spacecraft will link to four others using lasers. No other internet-providing satellites do this, Handley said, and it’s what would make them special: They can beam data over Earth’s surface at nearly the speed of light, bypassing the limitations of fiber-optics.

An illustration of Starlink, a fleet or constellation of internet-providing satellites designed by SpaceX. This image shows how each satellite connects to four others with laser beams.

Mark Handley/University College London

Source: University College London

But for now, none of the Starlink satellites have laser beams. Gwynne Shotwell, SpaceX’s president and COO, told reporters in October that laser interlinks won’t be working until late 2020 at the soonest.

Gwynne Shotwell, SpaceX’s president and COO, in 2017.
Dia Dipasupil/Getty Images

Source: CNN

Until then, Musk says the company will link them via ground stations. A handful of sizable yet steerable antennas that can track satellites will be used to “talk” to the satellites.

Satellite tracking antennas in South Texas.

Dave Mosher/Business Insider

There are also small user terminals for the customers to connect — the ones Musk he said look like “a UFO on a stick” or, previously, “a sort of a small- to medium-size pizza.” (Though he or SpaceX has yet to show a picture of one.)

Rows of pizza boxes.


Source: FCC

That’s small enough to add to a home. “There’s also no reason one of these couldn’t be flat and thin enough to put on the roof of a car,” Handley said.

A Tesla Model Y electric car.

Musk said Starlink terminals would also easily fit on ships, airplanes, and other mobile devices, enabling these vehicles to have better broadband connections than what’s available today.


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