REDMOND, Wash., July 7 — The number that matters: 500. That is how many Starlink satellites SpaceX has deorbited since the constellation’s first launch in 2019, as of early 2025. The bottom line is that a deliberate, automated process now governs the end-of-life for these spacecraft, a procedure designed to leave nothing behind.
The figure that matters is not just the count, but what happens to each unit. Starlink satellites are equipped with ion thrusters, the same hardware used to raise their orbits, that can also lower them.
At end of life, SpaceX commands the satellites to perform a series of burns that drop their perigee — the lowest point in the orbit — to roughly 150 kilometers, or about 93 miles. At that altitude, atmospheric drag takes over, and the satellite begins a slow spiral downward over a period of weeks to months. By the numbers, the re-entry is violent.
The satellite hits the atmosphere at roughly 7.8 kilometers per second, which works out to about 17,400 miles per hour. The extreme frictional heating drives temperatures above 1,650 degrees Celsius — over 3,000 degrees Fahrenheit.
SpaceX states that the satellites are designed to be “fully demisable,” meaning they should completely vaporize before reaching the ground. Investors will note that “should” is not the same as “always.” In 2024, a piece of a Starlink satellite was found in Saskatchewan, Canada. Fragments have occasionally survived the re-entry fire.
SpaceX has responded with engineering changes: later versions of the satellite include more aluminum components, which burn up more readily than titanium or stainless steel.
Automated fleet management
The deorbit process is automated for most satellites. SpaceX’s ground control center in Redmond, Washington, monitors the fleet. The company has deorbited over 500 satellites total since the constellation’s first launch in 2019, a figure that covers all the hardware sent to disposal orbits since the program began.
The process is not a one-off event. It is a routine, managed operation for a constellation that numbers in the thousands.
The ion thrusters that give the satellites mobility in space also give SpaceX a controlled way to clear its orbital real estate. The company’s stated design goal is full demise — no surviving fragments — and the material upgrades to aluminum are a direct response to the fragments that have been found on the ground. The Saskatchewan find was a concrete reminder that even a “fully demisable” design has limits.
The upgrade to more aluminum components is the engineering fix, and it reflects a straightforward trade: aluminum burns, titanium and stainless steel do not. The question for the fleet going forward is whether the material change closes the gap completely.
What to watch next
The automated deorbit system is now a proven capability, with over 500 successful disposals. The figure that will matter next is the survival rate of fragments from the newer, aluminum-heavy satellites. If the upgraded design holds, the “fully demisable” claim becomes more than an engineering statement — it becomes a track record.
For now, the numbers are clear: 500 satellites deorbited, one known fragment found, a material fix deployed. The process is automated, the ground control is in Redmond, and the fleet keeps growing.
The bottom line is that SpaceX has built a disposal system that mostly works, and it is iterating on the part that does not.
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