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SiriusXM replaces its aging radio satellites in orbit

SiriusXM replaces its aging radio satellites in orbit

Built World

SpaceX lofts the 7.5-ton SXM-11, the latest swap in a fleet that beams audio to tens of millions of subscribers

Yesterday: SpaceX launches SXM-11

Overview

Tens of millions of people get SiriusXM through satellites, not cell towers. On the night of June 28, a SpaceX Falcon 9 carried up a 7.5-ton replacement for hardware that has been beaming radio since 2009.

The old satellites won't last forever. SXM-11, with a twin called SXM-12 still to come, keeps the signal alive for about 33 million subscribers and pushes coverage farther into Alaska.

Why it matters

If the orbital hardware ages out before replacements arrive, the radio in millions of cars and homes loses its signal.

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Key Indicators

7.5 tons
SXM-11 launch mass
About 15,000 pounds, one of the heavier commercial satellites Falcon 9 sends toward geostationary orbit.
~33M
SiriusXM subscribers
Total subscribers served by the satellite network as of early 2026.
$800M
Lanteris acquisition price
What Intuitive Machines paid in early 2026 for the satellite maker that built SXM-11.
17
Booster B1085 flights
The Falcon 9 first stage flew its 17th mission and landed on a drone ship for reuse.

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People Involved

Organizations Involved

Timeline

June 2009 June 2026

7 events Latest: Yesterday
Tap a bar to jump to that date
  1. SpaceX launches SXM-11

    Latest Launch

    A Falcon 9 lifts the 7.5-ton satellite from Cape Canaveral toward geostationary transfer orbit. The booster lands on a drone ship.

  2. Intuitive Machines closes the Lanteris deal

    Corporate

    The acquisition completes, renaming the unit Lanteris Space Systems, paid in $450M cash and $350M stock.

  3. Intuitive Machines agrees to buy Maxar's satellite unit

    Corporate

    The $800 million deal puts the maker of SiriusXM's satellites under new ownership.

  4. SXM-10 launches

    Launch

    An earlier satellite in the refresh flies on a Falcon 9, later entering service in August.

  5. SiriusXM orders SXM-11 and SXM-12

    Contract

    SiriusXM commissions Maxar to build two satellites to refresh the fleet and extend coverage into Alaska and Canada.

  6. XM-5 launches

    Launch

    The second of the aging pair that SXM-11 and SXM-12 will replace goes up.

  7. Sirius FM-5 launches

    Launch

    One of the satellites now slated for replacement reaches orbit.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

December 2020 – January 2021

SXM-7 in-orbit failure (2021)

SiriusXM launched SXM-7, a satellite from the same builder, in December 2020. During in-orbit testing in early 2021, its payload failed. SiriusXM declared it a total loss and filed an insurance claim.

Then

SiriusXM wrote off the satellite and kept older spacecraft in service longer.

Now

The loss forced an extra replacement satellite and showed that a launch is only half the job; the hardware must still survive testing.

Why this matters now

SXM-11 faces the same gauntlet now. Reaching orbit is not the finish line; weeks of checks decide whether it works.

July 2008

Sirius and XM merger (2008)

The two rival U.S. satellite radio companies, Sirius and XM, merged after a long regulatory review. The deal created a single operator running two separate satellite networks.

Then

The combined company avoided a price war and consolidated subscribers under one brand.

Now

SiriusXM inherited two fleets that now age on different schedules, which is why replacements like SXM-11 carry both XM and Sirius lineage.

Why this matters now

The merger explains the odd satellite naming and why one company must keep two legacy networks alive at once.

January 2017 – January 2019

Iridium NEXT constellation refresh (2017–2019)

Iridium replaced its entire 66-satellite phone and data network with new spacecraft, flying them on reused SpaceX Falcon 9 rockets across eight launches.

Then

Iridium swapped in modern satellites without dropping service to users.

Now

It became a template for refreshing aging orbital infrastructure on cheaper, reusable rockets.

Why this matters now

SiriusXM is running the same play at smaller scale: replace aging satellites one by one on reused Falcon 9s while keeping the signal on.

Sources

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