- SpaceX wants to surround Earth with a fleet of internet satellites called Starlink. Original plans called for launching nearly 12,000 satellites over the next 8 years or so.
- However, Space News reports that SpaceX has asked to launch 30,000 more satellites for a maximum of 42,000. That’s about 20 times the number of working satellites today and nearly five times the total of all spacecraft humanity has ever launched since 1957.
- Elon Musk, the rocket company’s founder, has said he hopes Starlink will get rural and remote regions of Earth online with affordable high-speed web access.
- Launching a bunch of satellites increases the risk of collisions and space debris. In early September, SpaceX experienced a close call between one of its first 60 Starlink satellites and a European spacecraft.
- Amazon, which is working toward a Kuiper System internet constellation, recently told the FCC that if one in 20 satellites loses its ability to dodge debris or satellites, there’d be about a 6% chance of collision.
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If SpaceX gets the go-ahead, the company’s planned fleet of Starlink internet satellites could soon outnumber all the spacecraft humanity has ever launched by nearly five-to-one.
That’s according to Caleb Henry at Space News, who on Tuesday reported that SpaceX, founded by tech mogul Elon Musk, now seeks permission from the International Telecommunication Union (ITU) to fly an additional 30,000 Starlink satellites into space. Those tens of thousands would be additional to the nearly 12,000 spacecraft that SpaceX asked permission to launch from the US Federal Communications Commission (FCC).
Put together, this suggests SpaceX now seeks to fly a maximum of 42,000 Starlink satellites.
That figure is striking if it comes to pass. SpaceX would have 20 times the number of operational satellites in orbit today, per a recent tally by the Union of Concerned Scientists. The company’s notional mega-fleet would also eclipse the count of all spacecraft ever launched into space by humanity (both operational and defunct) by nearly five-fold, based on a United Nations database.
SpaceX plans to boot up Starlink with a fraction of this number, then build toward a floating internet backbone around Earth that also bathes most of the planet’s surface in ultra-high-speed web access.
“For the system to be economically viable, it’s really on the order of 1,000 satellites,” Musk told Business Insider during a call with journalists in May, “which is obviously a lot of satellites, but it’s way less than 10,000 or 12,000.”
The additional spacecraft appear to reflect SpaceX’s planning for Starlink’s deeper future. As more satellites for internet constellations fly, they will bring risks as well as rewards.
New satellite internet projects may be multi-billion-dollar cash cows
There are a few reasons companies like SpaceX, Amazon, OneWeb, Iridium, and others want to launch large constellations of internet-providing satellites. Chief among them is to rake in billions of dollars.
Traditional satellite internet relies on spacecraft that are larger, older, more expensive, and about 22,236 miles away from Earth. This limits coverage and bandwidth while making for laggy connections.
But Starlink, for example, would hug Earth at hundreds of miles to 1,000 miles away with a larger number of newer satellites. They’d also link together into a floating internet backbone, providing a faster alternative to fibre-optic cables that span the world – a privilege that financial traders would ostensibly pay big money to use.
The close proximity and interlinking would also increase download and upload speeds for users while cutting lag by perhaps dozens of times. Mass-manufacture of inexpensive satellites flown on fully reusable vehicles, like SpaceX’s planned Starship system, would keep costs relatively low, too.
Gwynne Shotwell, the president and chief operating officer of SpaceX, said in May 2018 that completing Starlink may cost $US10 billion or more. But in May, Musk said it could net the company perhaps $US30 billion to $US50 billion per year by grabbing a few per cent of the global telecommunications industry total business.
Financial analysts said last month (before knowledge of the 30,000 extra satellites became public) that Starlink could propel SpaceX to become a $US52 billion company, or possibly more than twice that if the project does exceedingly well.
The FCC gave SpaceX until November 2027 to reach its maximum planned fleet of nearly 12,000 Starlink satellites. As Henry reports for Space News, though, SpaceX “submitted 20 filings to the ITU for 1,500 satellites apiece,” which adds up to 30,000 additional Starlink spacecraft.
These new satellites would orbit anywhere from 204 miles (328 kilometers) to 360 miles (580 kilometers) according to Space News, which reviewed the filings submitted to the ITU. The organisation’s approval is important because it globally monitors and regulates which satellite frequencies that companies and governments plan to use “to prevent signal interference and spectrum hogging,” Henry says.
The practical aim of Starlink (aside from cashing in) is to cover Earth with high-speed, low-latency, and affordable internet access. Having more points of access would benefit that aim. Even partial deployment of Starlink would benefit the financial sector and bring pervasive broadband internet to rural and remote areas.
But the risk of space collisions invariably rises as more satellites go into orbit
SpaceX gets a lot of attention for Starlink, but it’s not the only company planning huge satellite constellations. Amazon, for instance, hopes to launch 3,236 of its upcoming Kuiper System satellites into orbit.
Each one of these new fleets significantly adds to the risk of spacecraft collisions with other spacecraft. The same goes for resulting space debris, or high-speed junk, which can strike, disable, or destroy other satellites.
A separate report by Mark Harris at IEEE Spectrum on Wednesday touched on this risk via filings that Amazon recently submitted to the FCC in its push to get Kuiper off the ground.
Though Amazon’s submissions dig into risks associated with failures of their satellites, the analysis is arguably relevant to all new proposed constellations planned for low-Earth orbit.
Amazon and SpaceX both plan to have satellites that can avoid collisions. Even so, the new Amazon filing, as detailed by Harris, suggests that if 5% or one-in-20 satellites fail (or their avoidance systems do) in a large constellation, the risk of a collision would be around 6%.
Such a rate is “well beyond what Amazon would view as expected or acceptable,” the company wrote in a letter to the FCC. And while that may not seem like much, John Crassidis, a space debris researcher at the University at Buffalo, reportedly said it’s “huge.”
“At a 6% chance of collision, astronauts would be put into an escape hatch to possibly escape,” Crassidis told IEEE Spectrum, presumably referring to the International Space Station, where six people currently live and work. “Even at orders of magnitude less than that, you’d want to do a manoeuvre to avoid it.”
Also, SpaceX has seen a 5% failure rate with its first batch of 60 Starlink satellites: Three stopped working after their deployment. But Musk noted before the launch that the devices were experimental. (“There is a lot of new technology here, so it’s possible that some of these satellites may not work,” Musk said.)
Regardless, the FCC is poised to tighten its rules on avoiding satellites collisions and creating new space debris for the first time since 2004. To that end, it’s been collecting feedback from the industry on the newly proposed rule set since last October.
One proposed tweak is having companies ensure the risk of collision for an entire satellite fleet – not just one spacecraft – be no more than one-in-1,000, or 0.1%, over its lifetime. Another is to improve data sharing between operators. (In September, a European satellite and a Starlink satellite came uncomfortably close to colliding due to an apparent glitch in SpaceX’s email-based alert system.)
SpaceX did not acknowledge a query Business Insider sent on Tuesday regarding the new ITU filings and the company’s latest plans for Starlink.
However, a company representative reportedly told Spaceflight Now in a statement: “As demand escalates for fast, reliable Internet around the world, especially for those where connectivity is non-existent, too expensive or unreliable, SpaceX is taking steps to responsibly scale Starlink’s total network capacity and data density to meet the growth in users’ anticipated needs.”
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